We love berries and blackberries are a favorite, but if you have seen blackberry bushes growing wild then you know they are invasive. Growing blackberries in a small yard or garden can be a challenge. Here is what we have done.
To control the runners that make the plants pop up all over your garden requires you contain them. We have blackberry and raspberry plants in containers and in small planters that are impossible for the vines to spread. Raspberries are planted in a planter along our driveway that is surrounded by concrete so the plants spread in that small planter but no where else.
We also took some large pots we were not using and planted two plants in those containers with a support in one and the other up against a wall along a trellis. The vines need to climb so you need to support them with cages or a trellis or along a fence.
You can see this plant is top dressed with lots of compost and supported by an obelisk. This is the plant in January. I have pruned it and if you could look closely you could see small buds swelling. The old leaves will all fall off as new growth emerges but I will pull them off if they don't.
We love the thornless varieties of blackberries. Easier to pick the fruit and prune if you are not getting poked by thorns. Here is one of the varieties I have planted.
Tips for feeding your blackberry vines.
1. Fertilize blackberry bushes in the early spring just as they start to form buds and before new
growth. You can use a 20-20-20 granular fertilizer or top dress heavily with compost like I do and feed a couple of times with your homemade compost tea.