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You can grow Triple Crown thornless blackberries fairly easily once you understand a few key habits of this particular variety.
Triple Crown thornless blackberries are a semi-erect blackberry variety known for their sweet, juicy fruit and their lack of thorns, which makes them a favorite for home gardeners who want big harvests without the scratches.
If you’ve been wondering how to grow Triple Crown thornless blackberry plants successfully, the good news is that they’re forgiving, vigorous, and productive when you give them the right start.
In this post, we’ll walk through how to grow Triple Crown thornless blackberry step by step, from choosing a planting spot to pruning and harvesting.
Let’s dig in.
How to Grow Triple Crown Thornless Blackberry: The Basics
Learning how to grow Triple Crown thornless blackberry starts with understanding what this plant actually needs.
Triple Crown thornless blackberries grow best in full sun, which means at least six to eight hours of direct sunlight each day.
When you grow Triple Crown thornless blackberry in full sun, the canes produce more fruit, and the berries ripen sweeter and juicier.
They also need well-drained soil, because soggy roots are one of the few things that can genuinely ruin a Triple Crown thornless blackberry planting.
1. Pick the Right Planting Site
The first step in how to grow Triple Crown thornless blackberry is choosing a spot with good drainage and plenty of sun.
If your soil stays wet after rain, amend it with compost or plant in a raised bed so water drains away from the roots.
Good air circulation also helps, because it reduces the chance of fungal issues on those long, thornless canes.
2. Plant at the Right Time
The best time to plant Triple Crown thornless blackberry is in early spring or late fall, when the plant is dormant.
Plant bare-root canes about three to four feet apart in rows spaced six to eight feet apart, since Triple Crown thornless blackberries grow large and need room to spread.
Set the crown of the plant just at or slightly below the soil line, water deeply, and mulch around the base to hold moisture.
3. Water and Feed Consistently
When you grow Triple Crown thornless blackberry, consistent moisture matters most during the first year and during fruiting season.
Give your plants about one to two inches of water per week, and avoid letting the soil dry out completely while berries are forming.
Feed with a balanced fertilizer in early spring, then again lightly after harvest to help the canes recover.
How to Support and Prune Triple Crown Thornless Blackberry
Triple Crown thornless blackberries grow semi-erect canes that benefit from a simple trellis or wire support system.
A two-wire trellis with posts about four to five feet tall works well and keeps the canes off the ground.
Pruning is where a lot of gardeners get confused, but once you know the rhythm, how to grow Triple Crown thornless blackberry becomes much simpler.
1. Understand the Cane Cycle
Triple Crown thornless blackberry plants produce primocanes (first-year canes) that grow leaves but no fruit.
The following year, those same canes become floricanes and produce the berries you’re after.
After a cane fruits, it won’t fruit again, so it should be removed to make room for new growth.
2. Prune at the Right Times
In late winter, tip the primocanes back to about four to five feet tall to encourage branching and more fruit sites.
After harvest in summer, cut the floricanes that just fruited down to the ground.
This keeps your Triple Crown thornless blackberry patch clean, healthy, and ready to produce again next season.
Common Mistakes When You Grow Triple Crown Thornless Blackberry
Even though these plants are tough, a few missteps can slow them down or cut your harvest short.
Planting in soggy soil is probably the biggest problem, since Triple Crown thornless blackberries hate wet feet.
Skipping pruning is another one, because unpruned canes get tangled, produce less fruit, and invite disease.
Overfertilizing can also cause lots of leafy growth with very little fruit, so feed moderately and let the sun do its work.
Finally, don’t let the berries sit too long once they turn deep black, because fully ripe Triple Crown thornless blackberries are soft and ready to pick the moment they look glossy.
So, How to Grow Triple Crown Thornless Blackberry?
You grow Triple Crown thornless blackberry by giving it full sun, well-drained soil, steady water, simple support, and a yearly pruning routine.
This variety rewards you with large, sweet, seed-free berries and none of the thorny hassle that comes with older blackberry types.
Start with healthy plants, keep them watered and fed, prune the canes correctly, and you’ll be picking buckets of juicy blackberries within a couple of seasons.
Once you know how to grow Triple Crown thornless blackberry, it quickly becomes one of the easiest and most rewarding berries in the home garden.