Heat injury
Heat may cause seedlings to wither and fall over after emergence. Prolonged hot weather may cause an
older plant to form seed stalks. Plants begin to grow tall and send up flower stalks.
Solutions
If planting during warm weather, use floating
row covers to protect plants in the the seedling stage.
Once there are enough leaves to shade the stem, covers can be removed. Plant during cool weather to avoid
seed stalk formation. |
 Bolting
of lettuce plant

Wilting
of plants exposed to heat
|