This year's green canes of Polka raspberry are tied in and should provide autumn fruit |
I understand if you grow Polka raspberry canes just as an autumn fruiter that the raspberries are bigger and the crop heavier. It's up to you. I grow Polka as a double-cropper because where I live the weather can get very cold and blustery in autumn and can damage the crop. By making it fruit in summer, as well as autumn, I am hedging my bet and hoping to harvest fruit twice.
By the way, Polka is completely thornless and although it has had some problems with rust disease and white drupelet disorder this year, you wouldn't have thought it by the pounds of very healthy raspberries that I have picked. I've seen no insect infestation, or disease other than the rust. As soon as I spotted the rust, before it became a big problem, I picked off and put the leaves in the dustbin. After I cut down the old canes, as I mentioned above, I cleaned the ground of any old leaves and put them in the dustbin too.
Old brown cane of Polka double-cropping raspberry cut off following summer crop. The green canes will provide fruit in autumn. |
I like to tie in my raspberry canes at an angle. There's a reason for this. The canes grow a little taller than my 6ft high fence and the wind batters the top of the cane. By leading them down, the tops get more protection.
Green canes of Polka tied in ready to provide an autumn crop of raspberries |
When winter arrives and all the leaves fall off the above canes, I will retie the canes, angling them a little lower to give them more protection.