My lettuce has a tall stalk growing from the center and is not producing leaves anymore. What is happening?
When the weather turns hot, cool season crops like lettuce “bolt”. That is what is happening to your lettuce. That stalk is really the flower trying to produce seed. Try sowing lettuce crops in succession. That means sow seed every 2-4 weeks to ensure you have fresh, young lettuce plants. Once the plants are spent, the younger plants are ready to harvest. Also, look for bolt-resistant seeds when buying lettuce.