Hi all; I have problems growing any type of squashes, especially butternut squash. The plant grows fine in the beginning but then the leaves get yellow and the plant dries out. It's weird because this does not happen in my neighour's garden and we are just separated by the fence. FYI: My backyard is 100% covered by sunlight during summer and I live in Toronto Why does this happen? Is the soil missing any type of fertilizer? Please help. Thanks