This is definitely a problem plant for where I live in zone 5 Michigan.
Last year I got no fruit because a late freeze zapped all the fruiting buds.
This year no late freeze, but such cold, cloudy, horrible weather in late summer and early fall delayed fruit ripening. Leaves were changing and falling and the fruit wasn't ripe yet. I just harvested it yesterday, and a lot of it still wasn't ripe. Good thing too, because I didn't watch the news and as I look out my window now we had a hard freeze last night. Around October 1st we almost had one, escaped by a couple degrees.
I didn't harvest all of it yet, so I hope the freeze didn't do to the fruit what it did to the leaves. I did harvest about 9 pounds, and estimate that to be roughly 60% of what was out there. 2 years ago, the first year I got fruit, it was 7 pounds.
I like this plant but it seems to require a growing season longer than what Michigan typically provides - though I know there is a variety out there called "Michigan State" that was hybridized at MSU about a mile from my house, so if you want to grow this plant and live in zone 5 I would seek out that variety.
