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Grape growing
Rosemary Smith2
Posts: 8
in Talkback
can anyone tell me if my Muscat Hamburg grapes should have turned black by now. I have them in a cold greenhouse and they are growing under a polycarbonate roof. will this make a difference ? They are very healthy ,they have lots of warmth and they are very sweet tasting already, but only show the slightest signs of turning colour.I live in Devon and I thought they were early Summer grapes..can anyone advise please ?
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