pollinating squash by hand
I tried to grow squash last year; little immature fruits appeared on the female plants, but unfortunately shriveled up and died due to lack of pollination.
People have suggested pollinating by hand, however when should I do this? I was told that for squash plants and melon plants, the males blossoms always appear before
the female blossoms is this true?
Also I was told if you overcrowd the plants, that you'll get more male blossoms than female blossoms? The other question I have in regards to that is if you overcrowd the plants, are the immature fruit more likely to die, due to putting stress on the plant, or is it simply because of lack of pollination, or is it a combination of the two?