After all the foliage has browned back and the stems start to dry up.
This is the best time to harvest them. I have allowed gourds to stay
on the vine over the whole winter (I live in USDA Zone 8b) and in
spring they are dry. It takes about as 6 months for them to dry, and
up to a full year, so be patient. When you cut them from the vine,
make sure you leave about a three inch stem on the gourd and do not
make any punctures or cuts in the gourd or you will open it to certain
rot. If you live up north and have a dry attic which doesn't freeze,
that is a good place to dry them. The garage is also okay, it totally
depends on your winter low temps.
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