[Glyn]

Have been growing pumpkins for halloween have about 5 large ones but they are still dark green. went up today and leaves snapped and have white powder coming on leaves. if i pick them now will they ripen and store till halloween.

[shaun]

yes  

[gardgydja]

I have two ripening in my bedroom window right now. I read somewhere that in Africa people grow pumpkins, harvest them, and throw them up on the roof where they slowly ripen and cure in the warm days and cool nights. So I am attempting to recreate African roof conditions by shuffling my green pumpkins between this sunny window and the balcony for the cool nights.

So far it is working very well!