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thornless blackberries  RSS feed

 
gary reif
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I planted thornless blacberrirs last year. The canes grew about 7 feet tall. This spring the canes look dead but there is new growth at the base so plants look alive. Do I cut off canes above new growth?
Thanks
 
Dillon Nichols
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*Most* blackberries are biennials, and floricane bearing; they behave like summer-bearing(floricane bearing) raspberries; in year 1, a cane grows; in year 2, that cane will grow offshoots, which will then fruit, and another cane grows to do the same in year 3.

In fall/winter of year 2, after they've fruited, the canes which grew in year one will die, and can be removed if you like.

There are some primocane bearing blackberry cultivars, but that doesn't change the fact that canes will die after their second fall.


If these canes grew from the ground last year, and aren't sending out offshoots this spring, they may have been killed by an overly cold winter; where are you located?
 
gary reif
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Thanks
In Wisconsin on edge of zone 4/5. We had cold and little snow to insulate.
 
Dillon Nichols
pollinator
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Does sound like it could be winter damage then. I recalled reading that zone 5 was about the limit of blackberries, but a quick google shows that this is highly cultivar dependent, with some cultivars apparently feasible down to zone 3! So, if this particular cultivar can't hack it, there's probably one that can. Good luck!
 
David Livingston
steward
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Location: Anjou ,France
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I have some thornless black berrys aka Brambles aka muire. They are great I was getting 10kg plus from one plant at my old allotment
I grow them left and right alturnate years . Last year being the first year here at La Ravardiere I grew them and tied them to the wall to the left of the plant I got no berrys it being the first year . This year I will tie the new growth to the right and harvest on the left . After the harvest or at latest 29th September I will cut off all the growth on the left ready for the new growth next year . Most important never let the ends of the growth touch the ground unless you want a new plant .
Legend has it that when the devil was cast out of heaven on the 29th Sept and he fell to earth and landed on some brambles which hurt so he cursed the bramble so all the fruit after the 29th Sept will be bitter . Doubt me if you will but the later fruit is always bitter so this must be true

David
 
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