I mainly grow peppers and tomatoes, but have dabbled with butternut squash the last couple years. In both years, my butternut squash plants have produced a couple nice squash, but lost several others. They would form and grow to a couple inches but yellow and eventually die.

Is this an issue of nutrients?

I'm assuming since the little squash has already formed, it is not a pollination issue...right???

My mother actually had a buttercup plant this year that had at least 15 golf ball sized squash at one point and only one made it. The other ones stopped growing and died.

Any comments would be appreciated. Thanks.