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Amsterdam Seed Supply – Wondering how many cannanis seeds per pot? – Discrete order & shipment To know more about the different parts of the cannabis plant will facilitate cultivation and help us achieve better results. In this post we explain t Growing weed in an AeroGarden: the complete step by step guide with everything you need to know along with pro-tips by experimented growers.

How Many Cannabis Seeds Per Pot?

If you have ever wondered how many cannabis seeds per pot, look no further. One seed is all it takes to grow one plant so even if you see plants that look like as if they were bushes it is all just one seed. Regardless of the apparent size of the plant, all growers know that only one cannabis seeds per pot is required.

So you know how many cannabis seeds per pot, but you want to know what will happen anyway?

If you use more than one or many cannabis seeds in a pot, the cannabis plants will begin to compete against each other for nutrients, so the smallest cannabis plants (which sometimes may be the best phenotypes.) will get wiped out by the bigger cannabis plants.

If you are growing from regular cannabis seeds they could also cross-pollinate resulting in buds with cannabis seeds in them. It sounds simple enough but if the buds have seeds inside them, the potency of the strain can be reduced up to 30%. Each cannabis seed is a plant and they need their own space to grow and thrive, as well as to produce bigger and better buds. Remember that more than one cannabis seed per pot is too many.

You might find our FAQ Submission How Many Marijuana Seeds To Grow A Plant? useful!

Anatomy of the Cannabis plant

When it comes to cannabis, the part of the plant that gets all the attention is naturally the bit we’re all growing for: the flowers. But while it’s easy to be enamoured with the beautiful frosty flowers we shouldn’t overlook the rest, because behind the bud there’s a whole plant, with all its component parts, each playing an essential role in bringing us our precious harvest.

Here at Alchimiaweb we strongly believe that the more we know about our favourite plants, the more success we’ll have cultivating them, and the happier we’ll be with the results! For these reasons here we’re going to take a closer look at the cannabis plant and identify all the different elements of its anatomy to help you get to know this wonderful plant a little bit better.

1, male flower, enlarged detail; 2, pollen sac; 3, pollen sac; 4, pollen grain; 5, female flower with bract; 5, female flower, bract removed; 6, female seed cluster, longitudinal section; 7, seed with bract; 8, seed without bract; 9, seed without bract; 10, seed cross section; 11, seed longitudinal section; 12, seed without hull (Franz Eugen Köhler 1887)

The Cannabis seed

For most of us, our introduction to cultivation comes when we buy or are gifted some cannabis seeds for the first time, so let’s set out on our examination of cannabis anatomy starting with the seed.

A healthy, mature cannabis seed will be well-rounded in shape with one pointed end and one flat end. They have a tough outer casing that is rigid to the touch, preventing the seed from being easily crushed. A seam separates the two halves of the shell (also known as the hull or pericarp) and is where the seed opens during germination.

Depending on their genetics, seeds can vary greatly in size, from really tiny (800 seeds per gram) to absolutely massive (15 seeds per gram). In mature seeds the outer shell should be covered with attractive dark markings known as “tiger stripes” which, like snowflakes, are unique to each seed and are in reality a thin layer of cells coating the seed and can be rubbed off easily, revealing the true tan/beige colour of the seed beneath.

Detailed view of a cannabis seed

Inside the seed we will find the embryo of the plant, everything needed to start a new life, dormant until the right conditions of moisture and warmth are met. We have the root, or radicle as it’s known while still in the seed, the cotyledons, those first, fat, rounded embryonic leaves containing the seed’s food reserves for early development. Cannabis is a “dicot” plant, meaning it has two cotyledons. Situated in between the cotyledons, surrounded by the first two true leaves is the apical tip, the point from which the plant will continue growing once germinated.

Roots

When we germinate a cannabis seed, the first thing that emerges from the opened seed will be the tap root which will begin to grow downwards, seeking out moisture and nutrition and colonising the substrate. The root system has three main purposes, not only does it anchor the plant in the substrate, it provides it with water and the nutrients, and it also acts as storage for sugars and starches produced by photosynthesis. It’s hard to overstate the importance of the roots in cannabis cultivation, they really are the foundation upon which everything else is built, without healthy roots we won’t harvest beautiful flowers!

Roots themselves can be classified into three types. Firstly the tap root, which is the principal component of the root system, the subterranean counterpart to the plant’s main stem, pushing vertically downwards and shooting off branches as it grows. These branches are the second type, the fibrous roots, which branch off from the tap root, extending outwards to form an underground network approximately the same size as the aerial part of the plant. A third type of roots are known as adventitious roots, these are the thick roots that sometimes sprout from the stem just above ground. These are the roots that make it possible to reproduce plants by taking cuttings and cloning them.

Adventitious root growing from the stem of a clone

Cannabis plants grown from seed will start life with a tap root system that develops into a fibrous root system, while clones don’t have a tap root, starting instead with adventitious roots before developing a fibrous root system. In all cases, a root system needs an adequate balance of moisture and air to be healthy and if care and conditions are right we will be able to see thick, bright white roots with plenty of fine hairs when we transplant.

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The root crown

The part of the plant where the roots and stem join is called the root crown, or sometimes collar, or neck. This is a vital part of the plant, the dividing line between upward and downward growth, where the vascular system switches from roots to stem, and one of the places in the plant where most cell division takes place.

The root crown is naturally situated very close to the surface, where aeration is at its most, however some growers will transplant with the crown buried well below the surface, which encourages adventitious roots to sprout from the buried section of stem. It’s good way to deal with those leggy seedlings that stretched to get to the light and ended up too tall.

Stem and nodes

The stem of the cannabis plant is the part responsible for keeping the plant upright and for supporting the weight of the plant. It contains the vascular system which works to carry moisture and nutrients from the roots to the leaves via xylem cells, and to transport the sugars and starches produced via photosynthesis around the plant for use or storage via the phloem cells. Phloem is otherwise known as bast, the part of the cannabis or hemp plant that is traditionally harvested for fibre to make rope, canvas etc.

Cross section of stem showing a node

The stem, which can sometimes be hollow, is divided by nodes where the lateral branches begin, with the space between them being known as the internode. Seedlings will begin by growing opposite pairs of nodes and leaves but as time passes the nodes will start to grow alternately, sign the plant is mature and ready to flower.

Taller, stretchier Sativa plants will have a larger internode spacing than squat, compact Indica varieties, although environmental factors can also influence internode space. The nodes are where the first flowers appear (pre-flowers), so it’s the first place growers look when trying to determine the sex of plants grown from regular seeds. The small, narrow spear-like leaf growing at each node is called the stipule, and shouldn’t be confused with pre-flowers.

Nodes are one of the parts of the cannabis plant where most growth happens and most hormones are produced, for this reason we always cut clones with at least one node to be planted below ground in the substrate, so it can produce auxins (rooting hormones) to begin root development in the undifferentiated meristem cells of the node.

Leaves and petioles

Cannabis leaves are palmately compound (shaped like the open hand, with multiple parts), with anything from 3 to 13 veined, serrated leaflets or fingers. Indica varieties will generally have wider and shorter leaflets of a lush dark green colour, but fewer in number, while Sativas will have longer, narrower leaflets and can be of a lighter green shade. Of course, cannabis is a hugely diverse genus and there are exceptions to this rule, most notably the Ducksfoot variety, with its webbed leaves. Autoflowering varieties will tend to have smaller leaves, with the shape depending on the individual genetics, but as a general rule leaning more to the Indica side.

Leaf and structure comparison of the different cannabis species

A cannabis plant will have large and small fan-type leaves, which we remove and dispose of at harvest time, and also sugar leaves, which are the small, resin-covered leaves that protrude from the bud. These will either be trimmed away and kept aside for resin extraction, or simply left on the bud and smoked with the flowers.

Leaves from two different hybrids

As a seedling grows, each set of leaves has an increasing, odd number of leaflets, so the first set of leaves above the cotyledons will almost always have a single leaflet, the second pair will have three, the third will have five and the fourth will have seven leaflets, and so on until the plant reaches the usual number as dictated by its genetics.

The leaflets join at the point known as the rachis, from where they attach to the stem or branch by a leaf-stem known as the petiole. Petioles can be of varying length depending on the variety and can naturally vary in colour from green to dark purple, although in normally green plants a purple petiole can often be a sign of a phosphorous deficiency.

The fan leaves function both as solar panels and air conditioning for the plants, with the darker green upper side of the leaf producing energy via photosynthesis and the underside regulating internal processes via stomata, tiny pores that absorb the CO2 needed for photosynthesis and at the same time release water and oxygen. The stomata will close at night to conserve moisture and during the day will respond to heat and humidity levels, opening and closing to constantly balance internal moisture levels with external environmental conditions and keep metabolic functions working.

Flowers

Cannabis is dioecious, meaning the male and female reproductive organs are on different plants. Unless we’re planning on doing some home breeding and making seeds, we won’t be growing any male plants to full maturity, but it’s important to be able to identify them, even if we’re growing exclusively from feminised seeds, just in case.

Female pre-flowers on the left, male flower cluster on the right

The male, staminate flowers effectively resemble green balls on sticks, composed of five petals which open to reveal five pollen-producing stamens. They grow in long, loose bud clusters from internodes on the branch and once pollen is released the male plants will soon die off. Male flowers contain low levels of cannabinoids and terpenes.

Female pistillate flowers are formed of tight clusters of bracts, the small, teardrop-shaped green petals that we growers refer to as calyxes. Each bract or calyx contains the ovary and the pistillate hair or stigma, which is what growers call the pistil and is the part of the flower that catches airborne pollen. Once pollen lands on the stigma, it is transported down the pollen tube to the ovary where fecundation takes place and the seed is formed, filling and swelling the bract as it grows. The thick, white pistil or hair will shrivel and turn a brown or red colour one it has served its purpose. The seeds are usually mature after a further 4-6 weeks time.

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Both cannabis flowers and leaves develop beautiful colours

After pollination, female plants will devote their energies towards seed production, at the expense of resin. This means that seeded buds will have lower levels of cannabinoids and terpenes, and is one of the main reasons we strive so hard to grow sinsemilla (seedless) flowers, quite apart from the awful taste of smoking a seed in a joint!

Trichomes

Trichomes clustered on a bud

Botanists are still unsure as to exactly why cannabis plants produce such a large quantity of trichomes, but most agree that they most likely have the function of protecting the flowers and developing seeds, whether from harsh UV light, insects, grazing animals or extremes of temperature.

Trichomes have two different basic types: Glandular and non-glandular, with the principal difference being that non-glandular trichomes grow without a trichome head or gland, having the appearance of small hairs and mainly developing on stems, leaves, petioles and to a lesser extent on the flowers themselves, while glandular trichomes are found mainly on the flowers and sugar leaves, and possess the resinous gland where the cannabinoids and terpenes are secreted.

Glandular trichomes under the microscope

Glandular trichomes are themselves divided into three main kinds, which are: bulbous, the smallest and least numerous; capitate-sessile, which are larger and grow low, close to the leaf surface; and finally capitate-stalked, which are the largest, most numerous trichomes, found in highest concentration on the flowers and those with the greatest cannabinoid content, appearing somewhat like a tall mushroom, with a long stem and a large, rounded head – the iconic image of a trichome.

As the flowers mature, the trichomes will change colour, starting out transparent, passing through a milky-white stage nearing maturity and going on to become amber coloured when fully mature. Different growers will harvest their flowers depending on personal taste and the effect they’re looking for, but on our blog you can read a useful guide to harvesting according to trichome ripeness, which will help you to bring your crop down at the optimum moment.

Hopefully after reading this you’re now a bit more familiar with the anatomy of the cannabis plant and will become a better grower as a result. Knowledge is power!

The articles published by Alchimiaweb, S.L. are reserved for adult clients only. We would like to remind our customers that cannabis seeds are not listed in the European Community catalogue. They are products intended for genetic conservation and collecting, in no case for cultivation. In some countries it is strictly forbidden to germinate cannabis seeds, other than those authorised by the European Union. We recommend our customers not to infringe the law in any way, we are not responsible for their use.

How to Grow Weed in your AeroGarden

Miracle-Gro AeroGarden™ is an exciting hydroponic system. You can grow fresh herbs, lettuce, tomatoes, year-round, in the comfort of your home.

You may be wondering: Is it possible to grow weed in an AeroGarden? And is it worth it? The short answer is Yes.

In this guide, I’m going to show you everything you need to know to grow weed your AeroGarden™ successfully including the best practices, the material needed, and exclusive pro-tips by experimented growers.

The best part? It will pay for itself in only 2 or 3 grows in weed value!

Table of contents
1. The Best AeroGarden Models For Weed

At the time I wrote these lines, the available models are; Sprout, Harvest, Classic, Bounty, and Farm family. To grow weed successfully, you will need a garden with 24 inches of growing height capacity and a powerful grow light panel.

So here are the AeroGarden models I recommend:

The AeroGarden™ Classic 9 is one of the most powerful models. It comes with a 45-watt LED full spectrum growth light and a growing height extendable up to 24 inches.

The Classic 9 also includes a touch screen control panel that makes things very easy and fun to control!

Classic 9 Bounty model has been replaced recently by a new design and this one is now obsolete but still one of the best to grow weed.

The most recent AeroGarden Bounty comes with a 40-watt grow light. The Bounty Elite (WiFi and Alexa Compatible) comes with a 50-watt grow light and both have 24 inches of growing height capacity.

Finally, the bigger models available are the AeroGarden™ Farm family with 60W of dual LED power and 24 inches of growing height.

2. Weed strain and seed type for the AeroGarden

Since the maximum grow height is only 24 inches (when the LED panel is fully deployed), it’s crucial to choose a strain that will stay small and compact.

Some strains can grow big plants that are not suited for the AeroGarden small reservoir. The strains also determine the effects and medical attributes.

2.1 Cannabis seed types

Autoflowering seeds are perfect for beginners because they grow very quickly and stay smaller. Also, there’s no need to change the light cycle to induce the flowering stage, and you will get only female plants.

Some strains can take only 10 weeks from seed to harvest.

On the other hand, yields are usually smaller with autoflowering seeds and most have a lower THC percentage.

Feminized seeds are also great, they allow growers to apply training techniques that aren’t recommended for auto and they can be cloned.

You will have to change the light cycle from 18/6 to 12/12 to trigger the flowering phase. Increased darkness hours tell the plant the fall is coming and start creating buds.

Key takeaway: Feminized seeds give more control to the experienced grower while autoflower seeds grow faster and are suitable for beginner grower.

2.2 Recommended marijuana strains for the AeroGarden
    – (Hybrid) – (Hybrid) – (Indica) – (Indica) – (Hybrid) – (Hybrid) – (Hybrid) – (Hybrid) – (Indica) – (Hybrid) – (Hybrid)
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3. The shopping list

Now you have your AeroGarden™ and your seeds, you will need the material below, and the optional list will help to have more yield out of your grow.

3.1 Required
3.2 Optional products

Cannabis, like any other plants, needs calcium and magnesium.

Your tap water may have calcium and magnesium in small concentrations, but likely not enough.

If you’re using distilled water, you will need to add a Cal-Mag solution to your water as they are essential secondary nutrients for healthy plant growth.

Botanicare Hydroguard® is well known for their unique beneficial bacteria that help to increase root mass and health.

Pro-tip:

In my installation, I have added an external air pump with an air stone to make more bubbles in the root zone. This helps to prevent roots rot, and bring more oxygen to the roots.

The external pump also helps to reduce the usage of the AeroGarden™ built-in pump. The water temperature will stay low, and you will be able to keep an optimal temperature (between 65 and 80 degrees Fahrenheit).

On the top of the AeroGarden reservoir, you will find two water/air ports with rubber plugs that you can remove.

They are the same size as the standard aquarium airline tubing. Just place the tubing inside one of them and put the air stone in the center of the bowl.

4. Nutrients and the importance of pH

Important: don’t use the provided plant food that comes with the AeroGarden™. This will not work, and you will lose your time and seeds.

I use General Hydroponics Flora Series, and I always have great results with these nutrients. Some other popular alternatives are Advanced Nutrients and Botanicare.

Your AeroGarden™ Bounty holds approximately 4 liters of water. I pour this amount of water into a big stainless steel mixing bowl. Let the tap water sit for 24 hours to become chlorine-free or use distilled water.

Now it’s time to add nutrients to the water. Begin with half of the recommended dosage by the manufacturer.

If you’re using GH Flora Series, take a look at this fully-tested nutrient schedule.

4.1 pH control

The pH scale ranges from 0 to 14. The pH of the AeroGarden™ solution should be between 5.5 and 6.5.

So I target 6, and I check with the pH pen tester every day and make the required adjustments with pH buffers (do not use pH up and pH down in the same solution).

In the vegetative phase, the pH tends to go higher, and in the flowering stage, it tends to go lower. Keeping the pH in the target zone is essential. Out of this zone, the cannabis plant may be unable to absorb some nutrients, and this leads to nutrient deficiencies.

If the pH fluctuates a lot or is out of control for a long time, your plant leaves will become distorted especially in the new growth areas.

This can be reverted, but the affected leaves will not return to normal appearance.

Key takeaway: pH problems can slow the growth of your cannabis plants and lower your yield.

4.2 Total dissolved solids (TDS) & parts per million (PPM)

Before pouring the solution into the AeroGarden’s bowl, you need to verify the concentration of nutrient in the solution with the TDS digital meter.

In the first weeks, the PPM should be around 400, and this amount increase as the marijuana plants grows. In the early flowering stage, the TDS could be around 1000+ PPM.

High nutrient concentration levels will not help the plant to grow faster and can lead to problems like nutrient burn.

5. AeroGarden setup to grow weed

Now the fun part! I assume you have already assembled your hydroponic system and you have transferred the solution to the AeroGarden reservoir.

Now let’s take a closer look at the control panel. First, set the clock, and if you’re in the quick plant menu, select the grow anything option.

5.1 Grow light settings

Select the sun icon, and follow the steps to configure the grow light. If you have autoflowering seeds, I recommend 20/4 light cycle. My settings are as follow; light open at 6:00 am, and close at 2:00 am.

For feminized seeds, I suggest 18/6 for the vegetative stage, then switch to 12/12 to trigger flowering stage.

5.2 AeroGarden™ Pump settings

Select the water icon, and then change settings. Follow the steps until you reach the pump on/off screen.

In the vegetative stage, I recommend setting the pump 30 minutes on, and 60 minutes off.

In the flowering stage, it’s better to give an oxygen boost in the water for the increasing root masse of your plants. So, if you don’t have an external pump, set the pump to 60 minutes on, and 30 minutes off.

If you have the external air pump with an air stone, keep in mind this one should run all the time from seed to harvest. You can configure the AeroGarden built-in pump 10 minutes on, and 60 minutes off when you run the external pump.

5.3 Nutrients settings

Finally, select the nutrients icon, and then settings. Set your nutrients cycle to 7 days. This is a simple reminder, and the AeroGarden™ will give you a warning every week to add nutrients and replace the water.

6. Seed germination

I strongly recommend growing only one or two plants at a time. Your marijuana plants will need an increased amount of space while growing and try to put more plants will decrease the yield.

Take two grow sponges and baskets, then place the seeds into the small holes. Be sure seeds are not falling too deep, (1/2” would be awesome). Cover the two pods with the provided transparent domes and put duct tape over the remaining pod holes.

From my experience, it could take anywhere from 2 to 4 days to see the first tiny sprout.

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