raspberry fertilisation

Most raspberries are self-fertile and self-pollinating to a degree, but really need bees to maximise both the number and size of fruit, so I think you would be better advised to use cheap garden netting rather than debris netting.

Last year I kept a single raspberry under an anti bird net, the guage of the net was about 1/4 inch diam and this was sufficient to allow a fair amount of bumble's in to do their thing. My better half otherwise known as "the harvester" managed to get enough fruit from our single plant to make a few pots of wonderful jam. Tapper