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How much light do my seedlings need?
How much light do my seedlings need?

Seedlings need 120-150 micromoles/sec/m² of PAR for 12-18 hours a day.

Amy Storey avatar
Written by Amy Storey
Updated over a week ago

Why your seedlings aren’t getting enough light

Light is the number one underestimated factor of growing, even at seedling stage. If seedlings don’t have enough light, they grow more slowly and can become leggy. Overall, growers who provide inadequate seedling light have longer crop timelines and higher rates of seedling mortality.

Why do growers mistake the level of seedling light?

  • They don’t have enough lighting.

  • They place lighting too far from seedlings (bad coverage).

  • They don’t leave lights on long enough.

Usually, these problems are easy to fix: add lights or adjust your seedling light schedules!

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