Grapes in a polytunnel?

Want to talk about fruit and nuts? Got any problems? Here's your place to post.
Masco&Bongo
Living the good life
Living the good life
Posts: 320
Joined: Tue May 23, 2006 3:24 pm
latitude: 53.930141
longitude: -2.969870
Location: Lancashire

Grapes in a polytunnel?

Post: #147802 Masco&Bongo
Mon Mar 23, 2009 3:51 pm

Does anyone know whether grapes can be successfully grown in a polytunnel?

Our greenhouse is being demolished soon, and I'd like to move the mature grapevine that's in there to our new polytunnel.... it's currently dormant, so I think I should be ok to move it, however I can't find anything anywhere about growing vines under plastic....

Cheers!
"Its not who you are underneath, it's what you do that defines you" - Bruce Wayne

Blog: http://mistressofmeals.blogspot.com/

Colin
Jerry - Bit higher than newbie
Jerry - Bit higher than newbie
Posts: 47
Joined: Mon Dec 08, 2008 5:14 pm

Re: Grapes in a polytunnel?

Post: #147825 Colin
Mon Mar 23, 2009 6:11 pm

A friend of mine has a grape vine growing in his fair sized glasshouse.
I`m not sure if its the normal method but the root is planted just outside and the vine itself is trained to grow up in the rafters.

kathleen
Tom Good
Tom Good
Posts: 53
Joined: Thu Jun 12, 2008 8:10 pm
Location: Gisborne, NZ

Re: Grapes in a polytunnel?

Post: #148219 kathleen
Thu Mar 26, 2009 3:10 am

Maybe make sure that when the fruit is almost ripe that there's enough airflow going through - you wouldn't want your lovely grapes getting spoiled by rot & if it's nice & warm & humid in there rot would just love to set in.... Also keep an eye on the canopy, grapes are very susceptible to sunburn! (sounds very strange, but I live on an organic/biodynamic vineyard & I've seen it in our outdoor grapes! :sunny: )

User avatar
Odsox
Site Admin
Site Admin
Posts: 4838
Joined: Tue May 27, 2008 2:21 pm
Location: West Cork, Ireland

Re: Grapes in a polytunnel?

Post: #148276 Odsox
Thu Mar 26, 2009 12:13 pm

I think Kathleen gave the clue ... polytunnels tend to be very humid with a lot of condensed moisture on the polythene. It would probably lead to the fruit rotting unless you left the tunnel open at both ends all the time, which is possibly not a good idea if you have a windy site.
Worth a try though if the alternative is to throw away your vine, if only to prove me wrong :cheers:
Tony

Disclaimer: I almost certainly haven't a clue what I'm talking about.

User avatar
Green Aura
Site Admin
Site Admin
Posts: 8325
Joined: Thu Feb 07, 2008 8:16 pm
latitude: 58.569279
longitude: -4.762620
Location: North West Highlands

Re: Grapes in a polytunnel?

Post: #148295 Green Aura
Thu Mar 26, 2009 1:17 pm

My other concern about growing grapes in the polytunnel is fear of the vines piercing the plastic. If you're really diligent about cutting off side shoots it's probably not a problem - we're not and they're woody little b*ggers which will rip plastic no problem.
Maggie

Never doubt that you can change history. You already have. Marge Piercy

Life shrinks or expands in proportion to one's courage. Anais Nin

Masco&Bongo
Living the good life
Living the good life
Posts: 320
Joined: Tue May 23, 2006 3:24 pm
latitude: 53.930141
longitude: -2.969870
Location: Lancashire

Re: Grapes in a polytunnel?

Post: #148312 Masco&Bongo
Thu Mar 26, 2009 2:29 pm

Thanks everyone...

Hubby has said he will build me a frame for inside the tunnel for the grapes... we're also getting a tunnel with crop bar supports, so that will be handy too.

I'm pretty good with pruning and cutting off side shoots (mainly cos otherwise our greenhouse looked like a triffid attack!)

Not a fantastic picture, but this is what I don't want to lose!
Image
"Its not who you are underneath, it's what you do that defines you" - Bruce Wayne

Blog: http://mistressofmeals.blogspot.com/

User avatar
cherami
Jerry - Bit higher than newbie
Jerry - Bit higher than newbie
Posts: 33
Joined: Tue May 23, 2006 10:00 am
Location: France 18

Re: Grapes in a polytunnel?

Post: #284945 cherami
Tue Jul 21, 2015 1:31 pm

I am sure that before the days when Grapes were shipped into the UK all those that could, grew Grapes for eating inside large Greenhouse, so I believe the practice was quite normal, So why not in a pollytunnel, yes they are humid if the doors are closed but then in the summer who would close the doors.
I hope you have a pleasant Journey Through Life

User avatar
Odsox
Site Admin
Site Admin
Posts: 4838
Joined: Tue May 27, 2008 2:21 pm
Location: West Cork, Ireland

Re: Grapes in a polytunnel?

Post: #284949 Odsox
Tue Jul 21, 2015 6:24 pm

cherami wrote: So why not in a pollytunnel, yes they are humid if the doors are closed but then in the summer who would close the doors.

Well I would. :lol:
I've closed the doors on both my tunnels and greenhouses every evening so far this year, and they've stayed shut all day quite often as well. Not all of us are having record breaking temperatures (thank goodness), but sometimes it feels as if it's still winter even though it's a summer month.
To get on topic, I planted a black grape in my tunnel last year and it has several bunches of grapes this year, so I'll let you know if the higher humidity has and bad influence on them ripening.
I have a green grape vine in my greenhouse and that's pretty humid as well, but it doesn't affect the grapes at all, so I'm hoping I was wrong in my post further up.
Tony

Disclaimer: I almost certainly haven't a clue what I'm talking about.

User avatar
cherami
Jerry - Bit higher than newbie
Jerry - Bit higher than newbie
Posts: 33
Joined: Tue May 23, 2006 10:00 am
Location: France 18

Re: Grapes in a polytunnel?

Post: #284952 cherami
Tue Jul 21, 2015 8:28 pm

Even though it would seem we have nicked all your :sunny: sun 31 here today and 42 ish in the tunnel, I tend to keep the doors open unless I know its going to be below 10, because whilst it's 10 outside it is always that much hotter inside. I have read some very conflicting notes on humidity some say it does not matter others say it does. Funny I find the drier it is the more I get an infestation of Flea beetle around my other plants which does tend to run over to my tomatoes. Last year because of the dryness I got infested with greenfly. So this year I have kept it as moist as possible but kept doors open.

This is my first year of keeping eating grapes in the tunnel though for the last two years I tried to propagate some of the wine grapes I have, they did very well and in fact were hard to control, some grapes did go moldy before picking but they do that outside as well. Out of interest how are you growing yours, mine are running up high near the roof. I have watered mine as we have had no rain for, well I just cannot remember when but at lease two months, the grass is brown the plants outside are beginning to show distress, the wild plants too, we have no sloe berries at all. Please keep us informed how you get on with your grapes, I for one am very interested.
I hope you have a pleasant Journey Through Life

User avatar
Green Aura
Site Admin
Site Admin
Posts: 8325
Joined: Thu Feb 07, 2008 8:16 pm
latitude: 58.569279
longitude: -4.762620
Location: North West Highlands

Re: Grapes in a polytunnel?

Post: #284953 Green Aura
Wed Jul 22, 2015 7:24 am

Well, that's all right then. You got all our sun but we got all your rain. :lol:

I bought two grape babies (I can't call 4" tall a vine) repotted them when we got them home and put them in the polytunnel. One of them died within a couple of days and the other has lost all bar one leaf but is just about hanging on. I have no idea what the problem is - are there special requirements by way of compost etc? I'm wondering if they were just sickly plants in the first place.
Maggie

Never doubt that you can change history. You already have. Marge Piercy

Life shrinks or expands in proportion to one's courage. Anais Nin

User avatar
cherami
Jerry - Bit higher than newbie
Jerry - Bit higher than newbie
Posts: 33
Joined: Tue May 23, 2006 10:00 am
Location: France 18

Re: Grapes in a polytunnel?

Post: #284956 cherami
Wed Jul 22, 2015 8:58 am

Could have been a problem with the roots too short, may have needed some shade to begin with and of course some grapes just don't like certain climates, but the PT should have offset that problem. keep trying get some good stock in, I used http://victoriananursery.co.uk/ they have a good selection. I believe the Romans would have grown grapes in the north, so why not yourself.
I hope you have a pleasant Journey Through Life

User avatar
Odsox
Site Admin
Site Admin
Posts: 4838
Joined: Tue May 27, 2008 2:21 pm
Location: West Cork, Ireland

Re: Grapes in a polytunnel?

Post: #284958 Odsox
Wed Jul 22, 2015 10:49 am

cherami wrote: I tend to keep the doors open unless I know its going to be below 10, because whilst it's 10 outside it is always that much hotter inside.

The reason I close my tunnels is not the temperature but the wind. We have had gale force winds every week or two throughout this so called summer, and I don't want my tunnels to turn into wind tunnels. :iconbiggrin:
The new vine in my polytunnel is planted next to a side hoop and last year I allowed it to grow about 18" above ground level, each way along the side of the tunnel. This year I am training a rod to grow up the hoop it's planted by, and the 2 ends will be also grown up and over the hoops (when they reach that far)
The vine in the greenhouse has 2 rods along the roof in the conventional way. The second rod is just starting it's journey on the right hand side. It looks happy.

Greenhouse.jpg
Greenhouse.jpg (202.07 KiB) Viewed 3425 times
Tony

Disclaimer: I almost certainly haven't a clue what I'm talking about.

User avatar
Odsox
Site Admin
Site Admin
Posts: 4838
Joined: Tue May 27, 2008 2:21 pm
Location: West Cork, Ireland

Re: Grapes in a polytunnel?

Post: #284959 Odsox
Wed Jul 22, 2015 10:52 am

Did you check the roots for vine weevil grubs Maggie ?
I'm not sure if you're trouble by such things up your way, but they are a lot more common here now and devastate potted plants, especially cyclamen.
Tony

Disclaimer: I almost certainly haven't a clue what I'm talking about.

User avatar
cherami
Jerry - Bit higher than newbie
Jerry - Bit higher than newbie
Posts: 33
Joined: Tue May 23, 2006 10:00 am
Location: France 18

Re: Grapes in a polytunnel?

Post: #284961 cherami
Wed Jul 22, 2015 12:19 pm

Odsox wrote:
cherami wrote: I tend to keep the doors open unless I know its going to be below 10, because whilst it's 10 outside it is always that much hotter inside.

The reason I close my tunnels is not the temperature but the wind. We have had gale force winds every week or two throughout this so called summer, and I don't want my tunnels to turn into wind tunnels. :iconbiggrin:
The new vine in my polytunnel is planted next to a side hoop and last year I allowed it to grow about 18" above ground level, each way along the side of the tunnel. This year I am training a rod to grow up the hoop it's planted by, and the 2 ends will be also grown up and over the hoops (when they reach that far)
The vine in the greenhouse has 2 rods along the roof in the conventional way. The second rod is just starting it's journey on the right hand side. It looks happy.

Greenhouse.jpg


Now that explains a lot, your grapes in the greenhouse look very healthy and very large bunches, how much do trim back or do you just let it have it's way. I noticed up in the field I have the vineyard in, which I purchased some time ago that the vines that have been left to ramble and are climbing the Silver Birch tree's are the ones which look really strong and normally plenty of fruit, though the quality I am unsure about but they taste ok to me, though they are wine grapes.

I have read so much conflicting stories about planting outside and inside it makes the mind boggle, but next to the hoop will get lots of good run off water (let us have some please).
I hope you have a pleasant Journey Through Life

User avatar
Green Aura
Site Admin
Site Admin
Posts: 8325
Joined: Thu Feb 07, 2008 8:16 pm
latitude: 58.569279
longitude: -4.762620
Location: North West Highlands

Re: Grapes in a polytunnel?

Post: #284962 Green Aura
Wed Jul 22, 2015 2:40 pm

Odsox wrote:Did you check the roots for vine weevil grubs Maggie ?
I'm not sure if you're trouble by such things up your way, but they are a lot more common here now and devastate potted plants, especially cyclamen.


I'll have a look. :(
Maggie

Never doubt that you can change history. You already have. Marge Piercy

Life shrinks or expands in proportion to one's courage. Anais Nin


Return to “Fruit and Nuts”

Who is online

Users browsing this forum: No registered users and 4 guests