Bitter Lettuce

Question

I can’t grow lettuce that isn’t bitter. What causes this? Also, how can I prolong or even prevent broccoli heads from flowering before they are large enough to harvest?

Answer 1

Some lettuce is naturally bitter, but heat or a lack of water can also make lettuce bitter.

This article will help you with the broccoli bolting:
https://www.gardeningknowhow.com/edible/vegetables/broccoli/bolting-broccoli-growing-broccoli-in-hot-weather.htm