Check Your Local Laws First

Before getting started, make sure to check your local laws on cannabis cultivation. In Canada, for example, you can legally grow up to four plants per household. Always stay compliant while enjoying the growing process.

Step 1: Start With Spring Water

Place your seeds in a small glass of spring water. Tap water may work, but spring water is cleaner and preferred. Fully submerge the seeds and let them soak for up to 18 hours—no longer. This hydration kickstarts the germination process.

Step 2: Use the Paper Towel Method

Prepare two thick paper towels folded together like a burrito. After soaking, place the seeds in the paper towel pocket and moisten it lightly. Keep the towel damp, not drenched. Too much water can drown seeds, too little can dry them out.

Step 3: Warm, Dark Environment

Seeds need a stable environment to sprout. Place the damp paper towel inside a container or between plates and store it somewhere warm and dark—around 22–26°C (72–78°F) works well. Avoid extremes; consistency is key.

Step 4: Watch for Cracks and Taproots

Within 1–3 days, you should see the seed shell crack and a small white root (taproot) appear. At this point, they’re ready for soil. Handle carefully—these roots are fragile.

Step 5: Prepare Soil and Plant

Use small containers like red solo cups with drainage holes. Fill with soil, keeping it firm but not packed. Poke a 1-inch hole, place the seed with taproot facing down, and gently cover with soil. Water lightly—moist, never soggy.

Step 6: Optional Heat Mat

If your room is cool, a seedling heat mat can improve germination rates by warming the soil slightly. Pair with a gentle grow light set far from the seedlings to avoid overwhelming them.

Step 7: Be Patient

Patience is the hardest step. Within 4–7 days, seedlings should break through the soil. Once they do, gradually increase light intensity as they establish roots. Avoid overwatering at this delicate stage.

My Results

From 5 seeds, 4 cracked quickly, and eventually all 5 germinated—achieving a 100% germination rate. With the right prep and care, you can achieve similar results.

FAQ

How long should I soak cannabis seeds?

No longer than 18 hours. Extended soaking risks drowning the seed.

What’s the ideal environment for germination?

Warm (22–26°C / 72–78°F) and dark, with stable conditions. Avoid extremes.

Do I need a heat mat?

Not required, but a heat mat helps in cooler climates by keeping soil at an ideal germination temperature.

When should I plant germinated seeds in soil?

As soon as the taproot appears. Waiting too long can stress or damage the root.

Can I use tap water instead of spring water?

You can, but spring water is recommended for best results since it’s cleaner and less likely to harm seeds.