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Guides | 04.28.2022

A Guide To The Gentle Process Of Transplanting Cannabis Seedlings

From seedling trays to pots, here's what you need to know when transplanting your cannabis seedlings.

So you just sowed some cannabis seeds, and they’re finally starting to sprout. Congratulations, it’s not always easy to make those little seeds sprout into strong and healthy seedlings. But what’s the next step? We created this helpful guide to give you the rundown on when, how, and why to transplant your precious seedlings.

What Is Transplanting, And Why?

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Transplanting any plant is the simple process of beginning your growth in a small tray or pot, then carefully moving the seedlings over to a new space once they need more room to grow and spread their roots.

It’s ideal to sow your seeds in a seedling tray first, and extra points if it’s a fiber-made tray that’s 100% decomposable. This gives you more control of the space and helps you easily identify which seedlings are the strongest, indicating a successful harvest a few months down the line.

When To Transplant Cannabis Seedlings

You could transplant cannabis seedlings once or twice, depending on how well you want to control the root system and the plant’s growth. In the simplest explanation, a large pot or grow bag will usually produce tall and large plants, whereas smaller pots let you control how large your plant gets by limiting the root growth.

The first indicator that you need to transplant your seedlings from a small tray or pot into a larger 3-5 gallon container is looking through the drainage hole on the bottom to see how well developed the roots are.

You could also carefully lift the plant and dirt around it for a more close-up look. Once your roots look a little too compact, it’s time to transplant. Finally, your seedling should have sprouted 4-5 sets of healthy leaves before transplanting.

How To Transplant Cannabis Seedlings

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Choosing the size of your final container is your preference, meaning you can control how large your plant gets by transplanting it into larger or smaller pots (usually 3-5 gallons for final transplanting).

  • Set up the container you’re moving the plant to by filling it with soil and leaving a “heart,” a.k.a, a space in the middle just big enough to fit your seedling’s root system (make sure the soil is loose, not tightly packed).
  • Carefully spray your seedling with only a bit of water.
  • Take a thin gardening tool or butter knife and gently separate the soil’s edges from the container.
  • Gently wiggle the bottom of the stem until the entire root system and surrounding dirt are completely out of the tray.
  • Before transplanting, softly crumble the plant’s root system to promote expansion and growth in its new home.
  • Place your seedling’s root system into your pre-made heart, and cover just enough until the root system is fully submerged.
  • Again, pack the soil lightly. If the soil is too tight, this might keep roots from expanding into the new soil.

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