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how to germinate marijuana seeds indoors

Seeds should be placed on top of the tissue, allowing each seed as much space as possible.

Place the plates somewhere warm (21ºC) and away from direct light.

Step 1. The setup – How to germinate cannabis seeds

The best way to germinate cannabis seeds requires only two saucers or plates and some moist tissue. Here is a step by step guide.

This article explains how to correctly germinate your cannabis seeds, covering everything from optimum temperatures, to potting your seedlings and transferring them outdoors (or inside under lights).

Within a few days some or all of the seeds should open and put out a root. It is common for cannabis seeds to open within 72 hours of being put in the germination medium. Less commonly, some seeds may need up to 10 days or even two weeks to open and put out a root.

To create a dark, protected space, take another plate and flip it over to cover the seeds, like a dome.

If cannabis is legal in your state, you can buy seeds or clones from a local dispensary, or online through various seed banks.

Males will have round balls—these will develop into pollen sacs, which will release pollen into the air when mature.

Step 1

One way to avoid sexing plants is to buy feminized seeds (more below), which ensures every seed you plant will be a bud-producing female.

Cannabis is grown from one of two sources: a seed or a clone. Seeds carry genetic information from two parent plants and can express many different combinations of traits: some from the mother, some from the father, and some traits from both.

So don’t discount bud because it has a seed or two in it. While not ideal, it could be the origins of the next great weed strain.

To get the buds found in medical and recreational stores, female cannabis plants are grown in an environment without males—or the males are removed from the area before they release pollen—so the females don’t create seeds. Females can then focus their energies on producing buds and not seeds—this high-potency marijuana is traditionally known as “sinsemilla,” meaning “seedless.”

Hard Cases

A shallow flat or planter with a heat pad underneath may require daily watering, while a deep, 1-gallon (3.8 liter) pot will need watering every three days or more. A properly watered flat of rockwool cubes needs water every three to five days when sprouting seeds.

2) Remove seeds from the water. Pour water out onto two paper (or cloth) towels on a dinner plate. Fold the towels over the seeds to cover them.

Other Tips for Germinating Cannabis Seeds

3) Shake matchbox for 10 to 15 seconds to scarify the seeds.

3) Drain the water from the dinner plate by tipping it to the side.

When the growing medium’s surface is dry (0.25 inches [1 cm] deep), it is time to water. Remember, there are few roots to absorb the water early in life and they are very delicate.

5) Check moisture level of towels several times a day, watering once or twice to keep them evenly moist. DO NOT LET THE TOWELS DRY OUT! Let excess water drain away freely. The paper or cloth towels will retain enough moisture to germinate the seeds in a few days. Each seed contains an adequate food supply for germination. Prevent fungal attacks by watering with a mild 2 percent bleach or organic fungicide solution.