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You prune wineberries by cutting back the spent floricanes after fruiting and thinning out the new primocanes to keep the patch productive and manageable.
That’s the short answer, but there’s a bit more nuance to it if you want the best harvest year after year.
Wineberries are vigorous, thorny canes that spread quickly, so learning how to prune wineberries properly is the difference between a tidy berry patch and a tangled mess.
In this post, we’ll walk through the timing, the techniques, and the simple steps you can take to prune wineberries like a pro.
Let’s dig into the brambles and get those berries thriving.
Why You Need to Prune Wineberries
Pruning wineberries isn’t just about keeping things neat, it’s essential for plant health and fruit production.
Wineberries are biennial, meaning each cane lives for two years, growing vegetatively in year one and fruiting in year two before dying back.
If you never prune wineberries, those dead canes pile up, harbor disease, and shade out the new growth.
Pruning wineberries keeps the air flowing through the patch, which reduces fungal issues like anthracnose and cane blight.
And by removing the old wood, you give the new canes the sunlight and energy they need to produce bigger, sweeter berries next season.
So when you prune wineberries, you’re not just trimming, you’re investing in next year’s harvest.
1. Know Your Canes: Floricanes vs. Primocanes
Before you grab your pruners, you need to tell the two cane types apart.
Primocanes are the first-year canes, they’re green, flexible, and covered in fine red bristles or thorns.
Floricanes are the second-year canes, they’re brown, woody, and they’re the ones that produced fruit this year.
When you prune wineberries, you’ll always be targeting the floricanes for removal and selectively working with the primocanes.
This simple distinction makes the whole process a breeze once you’ve done it once.
2. Timing Is Everything
The best time to prune wineberries is right after the fruit harvest, usually in mid-to-late summer.
That’s when the floricanes have finished fruiting and are starting to die back.
You’ll also do a second round of pruning wineberries in late winter or early spring before new growth breaks.
This dormant-season prune is for tidying up the primocanes and shaping the plant for the coming season.
If you prune wineberries too early in the spring, you risk cutting off buds that would have become berries.
Too late in the fall, and the plant might not harden off properly for winter.
So stick to those two windows, post-harvest and late winter, and you’re golden.
How to Prune Wineberries in the Summer
Summer pruning is all about removing the spent floricanes and cleaning up the patch.
Here’s the step-by-step for how to prune wineberries at this stage.
1. Cut Out the Dead Floricanes
Start at the base and cut each brown, woody floricane down to the ground.
These canes are done, they won’t fruit again, and leaving them just invites pests.
Use sharp bypass pruners and make clean cuts at soil level.
Don’t leave stubs, as they can rot and introduce disease into the crown.
2. Thin Out the Primocanes
After the floricanes are gone, look at the new primocanes that will fruit next year.
You want to thin these so you have about 4 to 6 of the strongest canes per plant or per foot of row.
Remove the skinny, damaged, or crowded canes by cutting them at the base.
When you prune wineberries this way, you reduce competition and make sure each remaining cane gets plenty of nutrients.
3. Tie or Trellis the Remaining Canes
Once thinning is done, tie the remaining primocanes to a trellis or wire support.
Wineberries are arching canes that flop over under the weight of fruit, so support is crucial.
Spacing them out horizontally along the wire improves air circulation and makes harvesting easier.
This is a small step, but it pays off big when you’re picking berries in July.
How to Prune Wineberries in Late Winter
The dormant-season prune is about size control and encouraging branching.
Let’s break down how to prune wineberries during this cooler window.
1. Tip the Primocanes
In late winter, the primocanes you kept are long, arching, and often bare.
Tip-pruning means cutting off the top few inches of each cane, usually down to about 4 to 5 feet tall.
This encourages lateral branching, which is where the fruit clusters will form.
More branching equals more berries, so don’t skip this step.
2. Remove Any Damaged or Weak Wood
Winter winds and cold can leave some canes cracked, split, or dead at the tips.
When you prune wineberries in late winter, cut out anything that looks damaged.
Also remove any canes that grew too far outside the designated row, as wineberries spread aggressively underground.
Keeping the patch contained now saves you a battle later.
3. Shorten the Lateral Branches
If last year’s laterals grew long, trim them back to about 12 to 18 inches.
This focuses the plant’s energy into developing plump berries closer to the main cane.
It also keeps the plant compact and makes picking a whole lot less scratchy.
Common Mistakes When You Prune Wineberries
Even seasoned gardeners can slip up, so here are the pitfalls to avoid.
1. Pruning All Canes to the Ground
If you prune wineberries to the ground every year, you’ll never get fruit.
Remember, floricanes fruit only in their second year, so if you cut everything down, you’re wiping out that year’s crop.
Always leave the primocanes and only remove the floricanes.
2. Pruning in Early Spring Too Hard
A light clean-up is fine, but heavy cutting right as buds swell can reduce yield.
If you must prune wineberries in spring, do it before new growth starts and keep it minimal.
Focus on dead wood and leave the live canes alone at that point.
3. Skipping the Trellis
Wineberries are not self-supporting, and unpruned, sprawling canes break easily.
If you don’t tie them up, the fruit touches the soil and rots.
Trellising goes hand in hand with pruning wineberries for a clean, healthy harvest.
So, How to Prune Wineberries for Good?
You prune wineberries by cutting out the old floricanes after summer harvest and then thinning, tipping, and tying the new primocanes through late winter.
This two-part rhythm keeps the patch vigorous, minimizes disease, and maximizes the size and sweetness of your berries.
It really is that simple, once you know which canes to keep and which to cut.
Listen, wineberries reward a little effort with massive crops, so get out there with your pruners and give them a proper trim.
Your future self, standing in a tidy patch with a basket full of deep red berries, will thank you.
Happy pruning, and enjoy every single berry you grow.