Marijuana Seed Taproot

This definition explains the meaning of Taproot and why it matters. Seedling is growing upside down, taproot is above the soil! Is your cannabis seedling growing upside down? Has the tap root come above the soil? If your root is growing straight up like in the Hi Nico, Quick question: Should I germinate my seeds before planting? If so, what's the best way to do it? Thanks, Cori W. Hi Cori, thank you for writing


Taproots are the thick primary root that normally grows straight down under the soil. In most cases, this is the first root that forms from the seed and is the main root anchoring system that the feeding roots grow from. As a result, the taproot provides the most nutrients to the plant. It is also the strongest and largest root and tends to burrow itself deeply into the ground.

A taproot is usually a thick root that tapers gradually. In some cases, a taproot can be forked or be framed by thinner lateral roots.

Plant roots are categorized into three main categories: taproots, branch roots, and adventitious roots .

Maximum Yield Explains Taproot

All plants have roots – the serve to supply the plaint with nutrients and moisture, and in the case of plants grown in soil, they help to anchor the plant in place. However, not all roots are the same. Pull up a plant, and you’ll find roots of all sizes and thicknesses, but you’ll most likely find that there is a thicker, longer central root off of which most other roots grow. This is the taproot.

Most plants, including cannabis plants, have a taproot. The taproot is the first root formed from the seed of the plant upon germination, and, while the plant will have other roots, it will remain the longest and thickest. It will also grow the deepest in the growing medium. Think of a carrot – the part that we consume is actually the plant’s taproot.

In some plants, such as carrots or radishes, the taproot is actually an organ that stores the major nutrients and vitamins. As a result, these taproots can be cultivated for eating. Other plants with taproots include parsnip, parsley, dandelion, sugar beet, burdock and beetroot, among others.

Not all plants have taproots, but those that do have specific benefits over those that do not. Because the taproot burrows much deeper into the ground, these plants are generally much more drought tolerant, as they can continue to locate moisture deep in the earth even in dry conditions. A butterfly weed can grow in sand or gravel because its taproot extends beyond the surface and is able to draw water along its entire depth. In addition to its water-gathering ability, a taproot provides additional stability in high winds for tall trees like the oak or ash. Another benefit is that taproots can also store nutrients for the plant, providing nutrition and helping to make plants more self-sufficient.

See also  Black Marijuana Seeds

Of course, taproots also cause some problems. A taproot on a tree like an oak usually isn’t an issue for gardeners, but they can be problematic for weed control. Pulling a dandelion, for example, can be difficult because they generally snap off at the top of the taproot. If the taproot is not completely removed from the soil a new plant will grow from it.

Seedling is growing upside down, taproot is above the soil!

Is your cannabis seedling growing upside down? Has the tap root come above the soil?

If your root is growing straight up like in the picture below, it’s not good. This is most common in seedling plugs. The tender white root tip has a good chance of drying out or being exposed to too much light. You want to strongly consider doing some “plant surgery” to turn this little seedling around to the right direction

The first thing to do is get a new Rapid Rooter. Since your seed already has a relatively long root, cut the plug open lengthwise so you can gently place the seedling inside in the right position without having to “push” down on the seed.

Now gently extract the seed from its original home with a pair of tweezers making sure to touch only the shell and not the root (the root is the most sensitive part)! Now lay the seedling in the middle of your newly split open Rapid Rooter and gently close the plug around it again.

Most seedling plugs will go back into place easily, and you’ll barely be able to tell it’s been opened

Since your seedling has already sprouted and has been in placed into the right growing position, it’ll probably pop its head out within just 12-24 hours! Sometimes you see just the leaves, but occasionally you actually see the seedling push the shell above ground.

When this happens the shell usually falls off on its own as the seedling grows!

When Should I NOT Do Surgery?

Sometimes you can see the young taproot of a cannabis seedling but the situation isn’t as dire. If the root is already pointed in the right direction, it’s probably going to be just fine! But if you’re worried, you can cover up the root until the leaves actually make it to the surface.

For example you could tear a tiny piece off the edge of this Rapid Rooter and gently lay it on top. Or if you were in soil you could sprinkle a tiny bit of soil over the seedling. The seedling will push it off as it grows upward.

See also  High Yield Marijuana Seeds

This case isn’t so bad because the root is already facing down, in the correct direction. Note: This seedling was just watered, but typically the Rapid Rooter should never look this wet. It should be moist but not shiny.

If you leave it alone, the seed will start to rise up, and open to reveal the seedling’s cotyledons (first, round leaves)

The cotyledons unfurl and then the regular cannabis leaves between to grow. Here’s another view of that same seedling from above only a few hours later. Even though it may have looked a bit weird at first, this seedling is completely normal and will grow just fine from now on!

Most of the Time Seedlings Take Care of Themselves!

When you see your seedling looks like this, where the part of the root exposed to the surface already looks green like a stem, you don’t need to do anything.

After germination, the tip goes down and stays white, and the other side that’s contained in the shell tries to work its way up, and that part of the stem turns green. Sometimes it looks like the root is going upside down because it appears that it’s not strong enough to be able to push the seed up.

As long as the tip of the root stays wet the seedling will be fine! The “root” is the same as what is going to become the stem. If it appears green it means that part of the root is already in “stem” mode and isn’t sensitive to the light.

If you just wait a little everything will have righted itself Here’s that seedling 12 hours later…

12 hours after that, the leaves have completely emerged!

If you hadn’t been watching you wouldn’t even have known anything happened!

Seed Germination & Planting

Hi Cori, thank you for writing us! Your question is pretty simple to answer, but sometimes not so simple to do! In short, yes, most growers tend to germinate seeds before planting them into their grow medium of choice.

To be clear, however, germination of seeds is not necessary prior to planting in medium. You can sow seeds directly into the medium and they will also germinate there, but not always with the same success rate. The reason growers choose to germinate outside the grow medium is because it is easier to control the conditions surrounding the seeds. This leads to the second part of your question, which is the best-case practices for germinating seeds – this leads to the harder answers.

See also  Green Marijuana Seeds

There are many different ways to germinate seeds. Probably the best methods involve keeping the practice as natural as possible. The simplest methods use water, warmth and darkness – all conditions the seed would naturally encounter underground. Many folks simply lay some seeds down on a paper towel on a flat plate, cover them with another paper towel, then moisten the paper and place the plate in a warm dark place. A popular hiding spot has always been on top of the refrigerator, while more professional growers employ heat mats that lie flat beneath seedling/ clone trays. Heat mats are an excellent and inexpensive aid for seed germination. Whatever you decide, the temperature should be 10-20 degrees above room temperature, or range between 78 – 90F.

Of course, there are always the tricky strains or the old seeds that are quite fussy and refuse to pop. These seeds require a bit more attention and creativity. Some people prefer to soak the seeds for a short period before placing them in a moist and warm place for germinating. Some people go as far as to use mild chemical solutions to help soften the shell and prod the seeds. Other growers will even use very sharp and sterile razors to carefully slice seed shells or tips to help induce germination. These practices are all risky and should only be used as a last resort.

Once a seed cracks open, the taproot appears. This taproot will become the plants primary root from which all other roots will grow. Technically, the seed is germinated once you can see the white of the taproot. Some grows prefer to wait until the taproot is 1-2 cm long before planting the germinated seed into a medium. Once you are ready to do so, be sure to place the seed about a half-inch below the surface of the medium with the taproot point downward and the seed shell on top. Be sure there is some space for the seed shell to push upwards through the medium, towards the light. At this point, the very young seedling still needs moisture, warmth and a bit of light now to direct its growth in the right direction. The seedling will likely be in this medium and container for a few more weeks before the seedling is ready to be transplanted into a larger container for vegetation.

Thanks for reading everyone and remember: Grow… And help the world grow, too!