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To train blackberry bushes, you need to understand that they grow on canes and produce fruit on second-year wood.
Training blackberry bushes properly means managing those canes so they get enough sunlight, air, and space to produce a heavy crop.
If you’ve ever wondered how to train blackberry bushes without turning your garden into a thorny jungle, you’re in the right place.
When you train blackberry bushes, you’re basically guiding new growth where you want it and removing what’s already fruited.
This keeps your plants healthy and makes picking a whole lot easier.
In this post, we’ll walk through how to train blackberry bushes step by step, from the first year to harvest season.
Let’s dig in.
How to Train Blackberry Bushes: The Basics
Training blackberry bushes starts with knowing the two main types: erect and trailing.
Erect blackberry bushes grow upright and can mostly support themselves, though a little help goes a long way.
Trailing blackberry bushes sprawl along the ground and absolutely need a trellis or wire system to stay off the soil.
When you train blackberry bushes, the goal is to separate first-year canes (primocanes) from second-year canes (floricanes).
Primocanes are the new green shoots that grow this season and won’t fruit until next year.
Floricanes are the ones that flower, fruit, and then die after harvest.
Knowing the difference is the whole secret behind how to train blackberry bushes successfully.
1. Choose the Right Trellis System
Before you train blackberry bushes, set up a trellis that fits your variety.
A simple two-wire T-trellis works great for trailing types, with wires at about 3 and 5 feet high.
For erect blackberry bushes, a single wire or a hedgerow setup is often enough.
The trellis gives you something to tie canes to and keeps fruit off the ground where slugs and rot can ruin it.
2. Train Primocanes During the Growing Season
As new canes shoot up, gently guide them toward the trellis instead of letting them flop everywhere.
When you train blackberry bushes, you can weave the primocanes along the wires or tie them loosely with soft twine.
Don’t tie too tight because canes need room to thicken as they grow.
Keeping primocanes tidy now makes training blackberry bushes way easier next year.
3. Top the Canes to Encourage Branching
Once a primocane reaches about 3 to 4 feet tall, pinch or cut off the tip.
This forces the cane to branch out, and those side shoots are where next year’s berries will form.
When you train blackberry bushes this way, you get more fruit per cane and a sturdier plant.
Just don’t top them too late in the season, or new growth won’t harden off before winter.
Pruning: The Other Half of Training Blackberry Bushes
Training blackberry bushes isn’t just about tying canes up, it’s also about cutting the right ones down.
After a floricane finishes fruiting, it will never produce again, so it has to go.
Cut those spent canes to the ground right after harvest to make room for new growth.
1. Remove Dead and Weak Canes
Thin out any canes that are spindly, damaged, or diseased while you train blackberry bushes.
A good rule is to keep about 5 to 8 strong canes per plant for erect types and fewer for trailing ones.
This improves airflow and reduces the risk of fungal issues like cane blight.
2. Tip Back Side Shoots in Late Winter
In late winter, trim the side branches back to about 12 to 18 inches.
This concentrates energy into fewer, bigger berries instead of a bunch of tiny ones.
When you train blackberry bushes with this winter cleanup, you set the stage for a strong spring flush.
3. Keep Rows Manageable
If you grow blackberry bushes in rows, keep them about 4 to 6 feet apart.
Crowded canes shade each other and invite disease, which defeats the purpose of training blackberry bushes.
A little space now means a lot more berries later.
Training Blackberry Bushes for Maximum Harvest
The real payoff of training blackberry bushes shows up at picking time.
Canes that are spread out on a trellis ripen evenly and are simple to harvest.
You can also train blackberry bushes into a fan shape or a horizontal weave, depending on your space.
Just stay consistent, because blackberry bushes respond best to the same routine every year.
1. Water and Mulch After Training
Once you’ve finished training blackberry bushes, give them a deep watering.
Add a layer of mulch to hold moisture and keep weeds from competing with your canes.
Healthy roots support the canes you just spent time training.
2. Watch for Pests and Disease
Training blackberry bushes opens up airflow, which naturally cuts down on problems.
Still, keep an eye out for aphids, spider mites, and spots on the leaves.
Deal with issues early so your trained canes stay productive.
3. Be Patient With First-Year Canes
Remember, primocanes won’t fruit this year no matter how well you train blackberry bushes.
They’re building the structure for next season’s crop.
So don’t panic if you see no berries yet, your training is working.
So, How Do You Train Blackberry Bushes?
You train blackberry bushes by guiding new canes onto a trellis, topping them to encourage branching, and cutting out old canes after they fruit.
It’s a simple rhythm of grow, train, prune, and repeat.
Once you get the hang of training blackberry bushes, you’ll wonder why you ever let them run wild.
So grab some twine, set up your wires, and start training blackberry bushes this season for a bigger, sweeter harvest next year.