My sweet peas have a lot of yellow dying leaves at the bottom of the plant and only two or three flowers with some buds. What is the cause?
It is common for the bottom leaves to yellow on all peas. The main problem, though, is that peas don't like hot weather. They may do better with some afternoon shade. More info here: https://www.gardeningknowhow.com/ornamental/flowers/sweet-pea/care-of-sweet-peas.htm