Leaf lettuce can stop growing when it is preparing to bolt (go to seed). Warm temperatures, over 70F, as well as changing day length, will trigger the plant to spend its energy in forming flower stalks. When this happens, leaves can become bitter. To delay bolting, if your area has been experiencing warm temperatures, you might try putting shade cloth over the plants so that they get filtered light. Try to keep them out of the heat of the sun. Be sure to keep up with the watering (but don’t overwater). As the plant bolts, you can still harvest the leaves until they become too bitter.
Leaf lettuce can stop growing when it is preparing to bolt (go to seed). Warm temperatures, over 70F, as well as changing day length, will trigger the plant to spend its energy in forming flower stalks. When this happens, leaves can become bitter. To delay bolting, if your area has been experiencing warm temperatures, you might try putting shade cloth over the plants so that they get filtered light. Try to keep them out of the heat of the sun. Be sure to keep up with the watering (but don’t overwater). As the plant bolts, you can still harvest the leaves until they become too bitter.