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How to Grow Small Cannabis Plants in Tiny Spaces

Do you want to grow tiny cannabis plants? Would you like to build a “microgrowery” for your marijuana garden? This tiny plant tutorial will teach you how to grow cannabis plants that stay small yet still produce an abundance of weed! I’ve grown a lot of cannabis plants of all sizes, and I’ll share the most helpful tips and tricks to make cannabis plants grow in the exact shape and size you want.

Small plants are easy to hide, yet can still produce a surprising amount of weed. Here are some short cannabis plants I’ve grown:

LEDs are probably your best choice in a small space. This tent is only 3 feet (90 cm) tall.

Here is that tent just before harvest. Notice the size of the slinky compared to the plants. This tutorial will show you how to create short plants with rows of buds in a small space like this.

This autoflowering plant grew into a tiny bud ball as a result of blue-spectrum LEDs and being topped after buds started forming (typically a no-no because it stunts autoflowering plants, but can be a good technique if you want to keep plants tiny)

I grew these plants in the same waist-high grow tent, but this time using a T5 fluorescent light. A T5 is another great choice for small spaces since they can be kept just inches away from plants. The downside is they produce more heat than LEDs. If you’re struggling with cold (for example growing a tiny garden in a garage or basement), fluorescent lights can help keep plants warm. If you want to minimize heat, LEDs are the way to go.

Then there’s the incredible world of solo cup plants. Restricted roots keep plants small. This autoflowering plant I’m growing now is just over a foot (30 cm) tall and buds are getting bigger every day.

Quick Summary (how to keep plants small without sacrificing yields)

Here’s a quick overview of the tutorial, then I’ll go into the detailed instructions below.

1.) Genetics

  • Choose a strain that naturally stays small – Today you have access to almost any genetics, almost anywhere in the world. Quick-to-harvest autoflowering strains are often the best choice for producing small plants, though short stature photoperiod strains can work, too. This tutorial shares several strains that have performed great for me in short spaces, and then I’ll share instructions on how to grow your plants so they stay as small as possible.

Certain strains like this Black Jack Auto naturally stay small, while still producing great yields!

2.) Grow Setup

  • Use the right grow light – Fluorescent lights (like CFLs or T5s) and certain LEDs are great choices for small grow spaces. I’ll break down the pros and cons of each and share the specific models that have kept plants short for me.
  • Light spectrum – Grow lights with more blue in the spectrum tend to keep plants short, while grow lights with more red can encourage stretching.
  • Restrict root space – Plants in big pots can become the size of trees! Keeping plants in smaller pots tends to keep them from getting as big (like a bonsai tree with restricted roots), but buds will still get fat as long as the plant is receiving plenty of light and nutrients.
  • Pick a “short” grow style – Short plants are often created through one of these grow styles: “Sea of Green” (many small plants in small pots), “Screen of Green” (using a screen), Manifolding (massively manipulate plant shape at a very young age), or other types of plant training (more on that below).

Restricting root size also restricts overall plant size

3.) Growing Practices

  • Keep grow lights as close as possible – Make sure your grow light is as close as possible without stressing plants. Strong light helps keep plants shorter.
  • “Top” your plants – Cut off the top tip of the plant when it’s just a few weeks old. This technique is known as “topping” and causes plants to grow bushy and spread out as opposed to tall like a Christmas tree. As a bonus, you create extra bud sites for free.
  • Plant training – Learn how to get any plant to stay the exact height and shape you want via “plant training” techniques. Even if your plants are already too big, this can help. Especially techniques such as LST (low stress training) and supercropping (extreme bending) can come in handy if you need to change your overall plant shape or reduce the height.
  • Don’t wait too long to initiate flowering – This doesn’t apply to auto-flowering strains, but if you’re growing a photoperiod (regular) plant, initiate the flowering stage when the plant is half the final desired size. Plants typically double in size after receiving a 12/12 light schedule. Plant height can get out of control if you wait too long. I learned this one from experience!

Bending and tying down stems can be used to keep a cannabis plant almost totally flat

1.) Genetics

Choose a strain that naturally stays small

Some cannabis strains tend to grow really big and tall no matter what you do. If a strain is labeled as “XL”, stay away! However, some strains stay super small without you having to do much of anything.

Auto-flowering strains start making buds in about 3-4 weeks from germination and are typically ready to harvest in 2-3 months. Due to this quick life cycle, nearly all auto-flowering strains stay on the smaller size. However, look for autoflowering strains listed as being short if you want the smallest possible plants.

Recommended short auto-flowering strains

  • Amnesia Auto by MSNL – I’ve harvested 3 of these plants and highly recommend the strain. They stayed small, grew sparkly buds with cerebral strong effects, and produced good-to-great yields
  • Berry Auto by G13 Labs – Fruity strain that stays short, grows easily, and is ready to harvest quickly
  • Black Jack Auto by Sweet Seeds – These plants naturally stay small while still producing great yields. If any branches get tall, they respond well to training. I really enjoyed the bud effects of this strain. They’re strong yet kind of unique. It reminds me of a sativa/haze with more of a body stone.
  • Blue Critical Auto by Dinafem – The Blue Critical I grew stayed small, bushed out on its own, responded extremely well to training, and buds came out fat and super potent! A joy to grow.
  • Cinderella Jack Auto by Dutch Passion – When I grew this strain, the plant stayed small and produced solid, dense buds. The buds ended up being popular because the effects were curiously strong and long-lasting.
  • Cream Cookies Auto by FastBuds Seeds – The bud quality is out of this world. And look beautiful in pictures! Each plant stays short, is easy to grow, and yields well.
  • Cream Mandarin Auto by Sweet Seeds – This strain tends to stay very small, sometimes almost runty. Although the citrus-smelling buds aren’t the biggest, they’re ready to harvest quickly and produce captivating effects.
  • Pineapple Express Auto by G13 Labs – An extremely popular autoflowering strain; plants stay short, are quick-to-harvest even for an auto, and the sparkle-encrusted buds smell like heaven.
  • Pink Kush CBD 30:1 by Seedsman – Medicinal strain with under 0.5% THC, beautiful buds, quick-to-harvest
  • Red Poison Auto by Sweet Seeds – This breeder has created several epic autoflowering strains, but the Red Poison Auto may be my favorite. I love the crazy red/purple color (which shows up on most plants, especially if the plant gets cool nights close to harvest), good yields, and dreamy bud effects.
  • Tangerine Dream Auto by Barney’s Farm – The intoxicating smell of citrus on a tiny, high yielding plant. What more could you want?
  • THC Bomb Auto by Bomb Seeds – I’ve grown 5 different plants of this strain over multiple grows in different setups, and every one came out excellent. Easy to grow, great yields, beautiful sparkly buds, and potent. Highly recommended!
  • Wedding Cheesecake Auto by FastBuds Seeds – Stays pretty small, quick to harvest, and buds produce powerful effects.

This Amnesia Auto by MSNL stayed small but produced a surprising amount of bud!

Decent sized buds for the compact size

THC Bomb Auto grows thick buds without needing a lot of height, and buds are POTENT

You can also choose photoperiod plants listed as “short” strains. Strains listed as “FAST” or “Express” may be candidates for a short grow space because they have a quick flowering period, but it’s good to read the description to learn more about what height to expect. Photoperiod plants typically get bigger than autoflowering plants, but they can be a great choice for a small space as long as you get a suitable strain and make sure to initiate the flowering stage when plants are 3-4 weeks old. Don’t let them get too big before you initiate 12/12 or they’ll overgrow your garden!

Recommended short photoperiod strains

  • Aurora Indica by Nirvana – Plants are fast-growing with dense, potent buds, yet they stay short and are ready to harvest quickly.
  • Candy Kush Express FAST by Royal Queen Seeds – Easy to grow and quick to harvest. Buds smell divine and effects are extremely relaxing.
  • Cream Caramel FAST by Sweet Seeds – Great yields on such a fast-flowering plant, tantalizing bud smell, and lovely effects.
  • Original Amnesia by Dinafem – This strain isn’t particularly quick to harvest but doesn’t get very tall. Plants respond positively to plant training including manifolding. Buds are big and beautiful, with effects that live up to the name “amnesia”
  • Peyote Critical by Barney’s Farm – Trippy effects on this strain. Plants stay short with training. Try to initiate the flowering stage before 4 weeks from germination and it shouldn’t get too big.
  • Romulan – This strain is extra popular where I live right now. Romulan plants stay short and buds are high in THC. Although it doesn’t have the best yields, the bud quality is worth it.
  • Royal Cookies by Royal Queen Seeds – Created from the extremely popular Girl Scout Cookies Forum Cut, this strain delivers beautiful American genetics with a punch, and plants stay small enough for a stealthy garden.
  • Speedy Chile FAST by Royal Queen Seeds – Grow ultra sparkly buds on a tiny plant. The effects are relaxing and may help with anxiety.
  • Sweet Russian by Garden of Green – Nice looking buds, stays small, yields well, good effects.
  • Sweet Tooth by Barney’s Farm – I’ve grown this strain a few times over the years, and it always stays short with good effects. However, BF seems to be improving and refining this classic strain for potency because when I grew this strain again last year, the buds felt more powerful than ever. Highly recommended!
  • THC Bomb by Bomb Seeds – Stays small, yields big, with excellent potency and sparkly buds. Can’t go wrong with this one.

Aurora Indica stays short and produces tons of buds

Original Amnesia responds well to plant training such as being manifolded

2.) Grow Setup

Use the right grow light – CFLs, T5s, and certain LEDs are great choices for small grow spaces. I’ll break down the pros and cons of each and share the specific models that have kept plants short for me.

CFLs give a lot of flexibility in tiny spaces because they’re small and can be kept just inches from plants. How to grow with CFLs.

This is my very first short plant, grown under a few big CFLs.

The plant was less than 1′ tall at harvest yet produced 1.5 ounces of bud. CFLs can produce good yields with small plants, but CFL bulbs that are big (or a lot of small CFLs) get hot and expensive. If you have space, I recommend upgrading to more efficient grow lights than CFLs.

T5 fluorescent lights are low profile, can be kept close to plants, and produce surprisingly good yields if you train plants to grow wide and flat like the plants here. The downside is they get much hotter than LEDs for the same electricity, and the yields aren’t as good per watt. How to grow with a T5 grow light.

LEDs come in a variety of shapes and sizes, so they can fit almost any setup. LEDs tend to be low on heat and electricity usage, which makes them great for small stealthy gardens. LED yields are excellent, too. On average, LEDs produce about twice the amount of dried flower as fluorescent lights like CFLs and T5s for the same electricity. The newer models of LEDs can yield even more. How to grow with LEDs in a mini tent.

These plants were grown in a 2’x2’x3′ tent under a 100W Quantum Board LED like this MarsHydro TS 600 (which is “600W equivalent” but actually only uses 100W)

Here is an example of the buds produced! (This was Auto Amnesia by MSNL)

Light spectrum – Grow lights with more blue in the spectrum tend to keep plants short, while grow lights with more red can encourage stretching. LEDs or bulbs labeled with a spectrum of 4000k, 5000k, and 6500k are great choices with plenty of blue to keep plants short.

This graphic represents the colors in visible light. Blue light encourages plants to stay short and bushy. Red light tends to cause marijuana plants to stretch and grow tall.

Restrict root space – Plants in big pots can become the size of trees! Keeping plants in smaller pots tends to keep them from getting as big (like a bonsai tree with restricted roots), though buds will still get huge as long as the plant is receiving plenty of light and nutrients.

Keeping plants in a small container causes them to stay smaller on average by restricting root size. This autoflowering plant grown in a solo cup barely grew to a foot tall.

These autoflowering plants were all germinated at the same time and even share 4 of the same strains. The little tent had 1-gallon pots, while the bigger tent used 3-gallon pots. The smaller pot size is a big part of why the plants in the mini tent stayed so much shorter and smaller.

Here’s another example showing how pot size makes a difference to plant size. These plants were all germinated at the same time in Rapid Rooters. Right before this picture I planted some of the seedlings in 3-gallon pots, and the others in solo cups. They were all about the same size at this point.

Within a week, the plants in bigger pots overtook the plants in solo cups. Most actually had an extra set of leaves compared to their solo cup siblings. The size difference would only have kept getting more vast if these plants were allowed to continue growing together. Small pots make small plants! Here’s a timelapse of that week if you want to check it out.

Pick a “short” grow style – Short plants are often created through one of these grow styles…

  • Sea of Green (SoG) keeps many small plants in small pots
  • Screen of Green (ScrOG) trains plants to grow along a screen or net, which forces them to stay about the same height
  • Manifolding is a process that massively manipulates plant shape at a very young age for a bushy, symmetrical plant
  • Other types of plant training such as Low Stress Training (LST) and Supercropping (extreme bending) can also be helpful to keep plants short

Sea of Green (SoG) – Many small plants

Screen of Green (ScrOG) uses a screen or net

Here’s another example of a net being used to help keep plants short and flat

Manifolding creates a solid main trunk with several symmetrical branches. This allows you to achieve monstrous yields on a relatively small plant.

Other types of pruning and manipulation such as Low Stress Training (LST) and Supercropping (extreme bending) can be used to create almost any size or shape plant

3.) Growing Practices

Keep grow lights as close as possible – Make sure your grow light is as close as possible without stressing plants. Strong light helps keep plants shorter. How far should I keep my grow lights?

“Top” your plants – Cut off the top of the plant when it’s just a few weeks old. This technique is known as “topping” and causes plants to grow more spread out as opposed to tall. You want a short bush, not a tall Christmas tree. Learn all about topping.

“Top” your plants when they’re 3-4 weeks old

A good time to top a plant is when it has about 6 sets of leaves

To top a plant, you cut off the top by clipping through the main stem

Topping makes plants grow more wide and bushy instead of tall. As a bonus, it increases the total number of main bud sites and improves yields!

Autoflowering Tip: Top an autoflowering plant after it’s already started making buds to keep it shorter. Topping in the flowering stage is normally considered a bad idea because it stunts most autoflowering plants, but can be a good tactic if you want to stunt the plant on purpose.

Topping after buds had already started forming caused this plant to stay extra small.

Here’s another example of a plant that was topped after it had already started making buds

Plant training – “Plant training” techniques give you ultimate power to create plants of nearly any size or shape.

Training techniques such as LST (low stress training) and supercropping (extreme bending) are especially handy if you need to change your overall plant form or reduce the height.

The grower wants to keep plants as short as possible

As the plants grew, she regularly bent all the top branches over and tied them down

That’s how these tiny plants were made!

Use bending to reduce the height of tall branches. Don’t forget to tie the branches down or they’ll turn back up! (I like plant twist tie for hooking around stems)

The arrow points to the twist tie that was used to hold down the branches as this plant grew

Use supercropping to bend at right angles without breaking your stems. This can be especially helpful if you’re plants are already too tall for your space.

Some growers take plant training to extreme levels

Check out the “skeleton” of the above plant after harvest. The grower basically trained the main stem to grow in a flat spiral around the base. So much bud in such a small area!

You can produce impressive buds on a small plant with a powerful grow light and high-yielding genetics

It’s amazing what can be accomplished with a little bending and tying down as your plant grows!

Don’t wait too long to initiate flowering – This doesn’t apply to auto-flowering strains, but if you’re growing a photoperiod (regular) plant, initiate the flowering stage when the plant is half the final desired size. Plants typically double in size after receiving a 12/12 light schedule, so plant height can get out of control if you wait too long.

Initiate 12/12 when your plant is about half the final desired size

Plant about double in height before harvest, though some strains “stretch” more or less (notice how the back left plant from the above tent got taller than the rest). Genetics make a huge difference! Learn more about the flowering stretch.

You should now have a solid understanding of what it takes to grow marijuana plants in any size or shape you want!

How to Grow Small Cannabis Plants in Tiny Spaces Do you want to grow tiny cannabis plants? Would you like to build a “microgrowery” for your marijuana garden? This tiny plant tutorial will teach

Slow Cannabis Plant Growth And What You Can Do About It

When your cannabis plants grow slowly or stop growing altogether, there is always a reason. It could be a problem with nutrients, an environmental factor, or something else entirely. Let’s explore the reasons your cannabis plants or seedlings may experience slow or stunted growth.

Contents:

“Why are my plants growing so slow?”. Sometimes, marijuana plant problems occur out of the blue. Your baby may not have shown any signs of an issue, but now you notice that development has halted and have no idea why. Here are some possible factors behind the slowed growth of your cannabis seedling or plant.

18 REASONS FOR SLOW OR STUNTED CANNABIS GROWTH

1. SEEDS ARE OLD OR LOW-QUALITY

Old seeds don’t just take longer to germinate (if they germinate at all); plants grown from aged seeds can also sometimes grow at a reduced pace. Likewise, good genetics are essential for healthy and vigorous growth from seed to harvest. A random bagseed will not perform nearly as well as quality seeds obtained from a reputable seedbank.

2. CLONE STRESS

Sometimes cuttings don’t root well, which hampers their growth. To prevent this from happening, apply a little bit of rooting hormone immediately after taking your cuttings.

Also, make sure your environment promotes root growth. The medium should be humid (but not too moist) with a pH level of about 6.0. Keep your cuttings at a temperature of around 22ºC. If they get too cold, they won’t root at all, and if it’s too hot, the roots will die.

3. ROOT HEALTH

When your plant’s roots can’t receive enough oxygen, metabolic functions slow down. In some cases, a lack of oxygen may stop their growth altogether. One common reason for this is overwatering or using substrates with poor drainage.

What to do about it? Create a light and airy growing medium with good drainage. You can improve poor-draining soil by adding some perlite.

The root zone for your cannabis plants should never get much hotter or colder than room temperature. Likewise, physical damage to the roots, mould, or bacteria can severely affect the growth of your plants. Always use non-transparent planters so light doesn’t reach the roots, as this is bad as well.

4. CANNABIS PLANTS STRETCH TOO MUCH

Stretching among seedlings can be particularly problematic. Multiple factors can induce this response, but the most likely culprit is a lack of light.

If your seedlings are spindly, increase light intensity or bring the lights closer. Prop them up with dowels as an aid during recovery. As a last resort, you can (carefully) replant them deeper into a new pot.

5. PLANTS ARE NOT GETTING ENOUGH LIGHT

Although requirements can vary from strain to strain, light is nonetheless a critical factor for the development of all cannabis plants. A lack of “good” light can absolutely lead to slowed growth. If you grow indoors and suspect that your plants aren’t getting enough light, try to decrease the distance between your lamps and the tops of plants. If you grow outdoors in pots, move your plants to a sunnier spot.

6. PLANTS ARE GETTING TOO MUCH LIGHT

Any type of stress on your cannabis plants, including many hours of exposure to direct sunlight without rest, can also halt or slow down growth. If you grow indoors and suspect light exposure to be the source of stress, decrease the intensity or move lamps further away from the canopy if possible. Know that seedlings are particularly sensitive to intense light! If you grow outdoors and you’re able to, move your plants into a spot where the light is diffused, such as around a shade tree.

7. INCORRECT LIGHT SPECTRUM

How fast and how vigorously plants grow are influenced by the spectrum of light they receive. Make sure you use the correct type of light according to each stage of growth. For healthy vegetative growth, you want a cooler light with more blue in its spectrum, a so-called “vegging light”. Lights with a warmer, more reddish spectrum are used for the flowering phase.

8. LIGHT STRESS: DARK CYCLE INTERRUPTION

Light is essential for all plants to grow. Any changes in light intensity or exposure will have an effect on growth. Flowering cannabis is especially susceptible to interruptions in the dark cycle. A light leak in your tent, stray light from a street lamp, and even a red light from a camera can disrupt flowering, and in a worst case scenario, can turn plants hermaphroditic. For that reason, it is very important to maintain complete darkness during the lights-off hours.

Exposing weed plants to irregular light hours can cause a hormone imbalance that confuses their internal clock. Your plants could flower prematurely, or they could revert back to the vegetative stage. If this happens, growth and yields will greatly suffer. For that reason, make sure to keep your light cycle consistent.

The above suggestions predominantly apply to photoperiod strains, as autoflowering cannabis flowers based on age rather than light exposure.

9. OVERWATERING

Overwatering is one of the most common mistakes made by new cannabis growers. It’s like suffocating your plants, and one of the main reasons behind slow growth, nutrient deficiencies, root rot, fungus, and many other problems. Don’t water too often and do not water on a fixed schedule. It is better water less frequently so that the soil can dry out between waterings. A good way to test whether you should water or not is to lift up the pot itself. If it feels quite light, it is time to water again.

10. NOT ENOUGH NUTRIENTS

Although not as common as overfeeding cannabis plants, an insufficient amount of nutrients for healthy growth can well be the reason for slow growth. Know that the nutrients found in most commercial potting mixes will only last for 3–4 weeks; afterwards, you will have to administer some more quality nutrients. Check the label of your nutrient products for the recommended dosage for healthy growth. Also know that your plant’s nutrient requirements are closely linked to the light intensity your plants are exposed to. Plants under intensive lights grow faster and will require more nutrients than plants under fluorescent lights, for example.

11. CALCIUM DEFICIENCY

Calcium is among those vital elements that your plant needs for healthy development. A lack of calcium can manifest in the following symptoms:

  • Fresh growth is slow, twisted, and curled
  • Young shoots are discoloured and turn purple or yellow
  • Overall plant growth is slow and lacks vigour and vitality
  • You can avoid a calcium deficiency by adding dolomitic lime to your soil or growing medium

Address a calcium deficiency immediately with commercial CalMag products that contain liquid calcium. You can add these products to your nutrient solution or administer them as a foliar spray.

Be aware that some growing media, like coco, increase the risk for a calcium deficiency. If you grow in coco, you should use special coco nutrients and/or regularly add CalMag to your nutrient regimen.

12. INCORRECT PH LEVEL

Incorrect pH level of your nutrient solution is among the most common reasons for cannabis growing problems, including slow growth. The reason for this is that cannabis thrives only in a relatively small window of suitable pH values. If the pH is off, the plants are unable to take in nutrients, even if they are present.

Make sure to dial in the correct pH level depending on your growing method. If you grow in soil, make sure the pH level is from 6.5 to 7.0. If you grow in hydro, an optimal pH level is 5.6 to 5.8. For soilless grows, such as coco, a pH level of 6.0 to 6.3 is optimal.

13. TEMPERATURES ARE TOO LOW OR TOO HIGH

Cannabis likes it warm to grow healthy, and does best at daytime temperatures between 25–30°C. Temperatures lower than that will slow down your plant’s metabolism, resulting in slower growth. But excessive temperatures are not optimal either. At very high temperatures, heat stress can also slow down or even halt plant growth altogether. If you grow indoors, adjust your temperature to a comfortable level. You can also provide some cooling with fans that blow a mild stream of air over your plants. This can also help prevent hot air pockets from forming inside your grow room.

14. PLANTING POTS ARE TOO BIG

Cannabis growers often start their seedlings in small cups. Later on, when the plants have reached an adequate size, they will “pot-up” to larger containers.

If you start your cannabis plants in containers that are too big, there is a high risk that you’ll overwater them. The issue is that seedlings cannot absorb all the moisture that is held in a large container, unlike mature cannabis, which can “drink” much more. Furthermore, a large pot will also take much longer to dry out.

To avoid the problems that come with too much soil and moisture, start seedlings in smaller containers until they’re growing vigorously. Once they have a set of 5–6 real leaves (not counting the cotyledons), then transfer them to a larger container, at least twice the current size.

If your seedling is already in a big container and you don’t want to or can’t move it into a smaller cup, water only a small area around the seedling.

• What Is The Right Size Pot For Your Cannabis Plant?

Use this rough guide to determine what size pot you should use for your cannabis plant:

  • Plant height 30cm: 7.5–11l container
  • Plant height 60cm: 11–19l container
  • Plant height 90cm: 18–26l container
  • Plant height 120cm: 22–37l container
  • Plant height 150cm: 30–37l+ container

15. STRESS CAUSED BY PESTS / DISEASES

Insects, pests, and disease can cause damage and compromise a plant’s immune system. In a best case scenario, your plant may survive, but you will have poor yields. In the worst case, your plants could die.

Insects may feed on the leaves, affecting a plant’s ability to retain water and transpire. Other pests may damage the roots or cause additional problems. Any time your plant is sick or infested with insects, it will spend most of its energy defending itself and recovering from damage, which will slow down growth.

If your plants are infested, you’ll want to treat them immediately with appropriate measures. Even better, you can use preventative methods (e.g. neem oil, slug barriers, etc.) to minimise the risk for pest infestations. During all stages of growth, ensure that you regularly check for symptoms of pest infestations, including under the leaves.

16. STRESS CAUSED BY TISSUE DAMAGE

Physical damage, such as broken branches, can significantly slow your plant’s growth. Any damage will make the plant redirect valuable resources to repair wounds—resources that could be better spent on growing or flower production.

If you’re growing outdoors, situate your plants in an area sheltered from strong winds and heavy rains, and use chicken wire and stakes to maintain support.

Seedlings and young cannabis plants are especially vulnerable. Allow your seedlings to mature indoors for some weeks before setting them outside.

17. STRESS FROM CANNABIS TRAINING TECHNIQUES

Tissue damage from high-stress plant training techniques always causes some delay in plant development. But when you’re pruning excessively or too frequently, your plant may ultimately spend more energy repairing itself than growing.

If you plan on pruning, don’t overdo it. Be aware that each pruning can delay the development of your plant for days, if not weeks.

If you’re using other plant training techniques such as topping, make sure you start as early as possible. If you’re growing autoflowers, don’t use any plant training techniques that involve tissue damage, such as pruning and cutting.

18. AGE STRESS

Older cannabis plants have different nutritional requirements than young plants. Their tissues become hard and woody, they’re less vigorous, and they’re unable to take in as many nutrients.

Because of this, you’ll want to adjust your feeding regimen accordingly. Otherwise you risk overfeeding, which in turn results in stunted growth, deficiencies, and disease. Keep this in mind if you’re keeping mother plants around for a long time.

Why is my cannabis plant growing slowly or not at all? Find out the answer to this question and see what you can do to solve it.