Keep seedings at a safe distance from the light source to avoid heat stress.

Follow the 18/6 light cycle for the next 2-3 weeks.

Use a blue-light spectrum for optimal results.

Expose to light source once seedlings emerge from the soil.

Gradually increase the photoperiod by an hour a day – working up to the 18/6 cycle.

Find a sunny window and place your seedlings in direct sunlight for at least 6-8 hours for the next 10 – 14 days.

To begin, keep young seedlings inside to protect them from the elements.Ideal light exposure and temperature will vary between strains depending on their intended grow climate. This is because the first leaves you see (cotyledons) are photosynthetic, meaning they are fully capable of capturing light and converting it into energy used for plant growth. Seedlings need exposure to light right after the sprout breaks the surface of the grow medium. When should cannabis seedlings be exposed to light?

Once this has happened, the vegetation stage begins, but for now, here are the best conditions for cannabis seedlings. By this time, the seedlings will have grown their first few pairs of serrated leaves, which usually have up to five fingers. The seedling stage of cannabis plants begins when the first two rounded leaves unfurl, and lasts for 2 – 3 weeks. Mimic those conditions using a propagator, a light, and a household fan, and set your seedlings up for success! In nature, cannabis plants are typically found in warm, sunny, and humid conditions with a light breeze to grow strong, resilient stems.

Auricula seedlings