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Causes of weak spindly seedlings
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| Temperatures too high: |
During seed starting times, keep the greenhouse temperatures in the 70's during the day, and in the low to mid 50's at night. |
| Not enough light: |
Seedlings reach to the light. Keep seedlings under fluorescent lights about 16 hours a day. Place the lights a couple of inches above the plants. |
| Not enough air movement: |
Have a fan running gently near the plants at all times. This helps them grow stocky and also prevents damping off fungus.
Also, brushing your plant tops gently with your fingers for a couple of minutes a day will help them grow stocky. |
| Seeds planted too deep or soil surface was too dry: | Seeds have a limited amount of energy to push themselves up through the soil. |
| Not enough food: |
Once you see true leaves, give the plants weak solutions of fertilizer. |
Click 'Read More to find out what causes weak spindly seedlings