Beginner Gardening: Growing Squash from Grocery Produce, 1 by UrbanAg

UrbanAg wrote:
I am new to vegetable gardening. This spring I have planted some seeds from store bought butternut squash with a view to transplanting them in mid May when the frost has passed. They have come up really nicely except the female flowers are blooming way before the male ones have developed (the males are there, just slow). And some flowers are starting to wilt. (see photos) I am wondering if the problem is with the seed or the conditions? Conditions are as follows.
1. grown in small pots in a warm south facing sunroom
2. used potting soil (tho yesterday I added a sprinkle of coffee grounds in case they are running out of nutrients - also have old comfrey leaves from my garden I plan to add)
3. Keeping the soil moist but not soggy
They are flowering way earlier than I thought they would. I am happy to experiment but I am wondering:
Are the containers too small and forcing early development?
Should I just wait it out and see if they produce more flowers when I transplant to larger pots in the garden?
Might this be a nutrient problem?
or a problem with a too warm room?
Or should I just start again? (I am heading to a local garden centre today with a view to buying butternut squash seed.) thank you for any and all advice - I am new to this but very excited that anything came up out of the soil at all.