[Trillium]

I don't see any life in my grapes until June. They're always the last to come back to life, and probably the smartest as it's full summer by then.

[NigelB]

I suspect Silkworm's tip is probably the best so far... remove a pane or two to keep air circulating and to stop mildew, and cut back foilage, but leave enough to shade the grapes...

My own vine is just putting out it's first leaves now. It has it's roots outside the greenhouse, but the rest of it is inside. I sprayed copper sulphate mix a couple of weeks ago, and I'll do it again just as the flowers start to form the first tiny grapes....
Hopefully, this year, I'll get the first proper bunches....

[Kristen]

... remove a pane or two to keep air circulating and to stop mildew...

My grape (Black Hamburg from memory) is sharing a large greenhouse with Toms, Cues and Melons. Is it going to be way to humid in there for it?

[richyrich7]

... remove a pane or two to keep air circulating and to stop mildew...

My grape (Black Hamburg from memory) is sharing a large greenhouse with Toms, Cues and Melons. Is it going to be way to humid in there for it?

Mine too

[Nikkithefoot]

... remove a pane or two to keep air circulating and to stop mildew...

My grape (Black Hamburg from memory) is sharing a large greenhouse with Toms, Cues and Melons. Is it going to be way to humid in there for it?

Mine does ok with toms and cucs, I just leave the door ajar if it gets too hot. I've never bothered with different humidity for the cucs and toms either and they do fine.

[Kristen]

Marvellous! thanks.

[digalotty]

do they have to ripen on the vine, its a well known fact that bananas release a gas that helps other fruit ripen , so if they were put in a bag with a banana would it speed up the proccess.

just thinking out loud realy 

[realfood]

For the very last few bunches of my crop, if they have not ripened fully, I just take them home and they finish off ripening on a sunny windowsill.
I grow tomatoes, peppers and cucumbers in the greenhouse as well and there is no problem growing them all together. You would not want too much humidity for any of these crops as it just encourages disease.

[NigelB]

... remove a pane or two to keep air circulating and to stop mildew...

My grape (Black Hamburg from memory) is sharing a large greenhouse with Toms, Cues and Melons. Is it going to be way to humid in there for it?

Mine too

The problem in my own greenhouse is that the vine grows within a few inches of the glass where it's been trained to climb away up the side and across the roof. I suspect a few have the same problem. This means that the leaves transpire moisture very close to the glass, causing more than a fair amount of condensation.
Removing a pane or two is all I can do really... No biggy though, they can always go back in before the autumn gales......

[Kristen]

Interesting. I've run training wires on cropped-bolts-with-ring - very close to the glass.


I could redo the wires hanging, say, 6" below of the glass, would that be better?

[NigelB]

If you have the same problem Kristen, it may well help.
I moved mine to about 4" from the glass last spring, but it didn't seem to be enough to stop the problem of excessive condensation as the leaves still reached the glass.
I'll be trying to adjust mine again tomorrow, getting it nearer to the 6" gap you mention.
We can only try.

[realfood]

I have lowered the supporting cable to about 20 cm below the plastic, but I do have about 7 ft to the roof in my home made greenhouse.

[johnfh]

We have an old vine in our greenhouse which produces quite sweet ripe black grapes every year.  However they are rather small but this can be greatly improved if you pick off about half of each bunch when they are a small pea size.  Rather a tedious job but the results are worth it if you take the trouble and it does seem to help them to ripen quicker.

[Silkworm]

Interesting. I've run training wires on cropped-bolts-with-ring - very close to the glass.


I could redo the wires hanging, say, 6" below of the glass, would that be better?

Hi All, You need to set your wires down a minimum of 9 inches 1 foot if possible as the foliage will easely reach 2 feet in a matter of 2 weeks, as well as the removal of some glass the greehouse door is always left open with a mesh panel fitted in the opening, to stop those ever hungry birds from taking my hard work away.  

Silky.

[NigelB]

Blimey! I hadn't even considered losing my grapes to the birds.....