FAQ: When to prune blackberries?

Do thornless blackberries need pruning?

Pruning Your Blackberries

You can let them grow taller but it won’t enhance berry production and may make it more difficult to trellis and care for the plants. Some types of thornless blackberries such as Cherokee and Cheyenne require pruning off the root suckers that emerge near the base of the plant.

How do you prepare blackberry bushes for winter?

Protecting blackberries in winter is pretty simple. If you are growing a trailing type, remove the canes from their supports and place the canes on the ground. Cover with a heavy layer of mulch. In the early spring, before new growth emerges, lift the canes and reattach them to the trellis.

How do you prune erect blackberries?

In their first growing season, the plants should need no pruning because first-year growth of upright blackberries is rather bushy. Erect canes will begin to develop the second year. Two or three times during the growing season, top the primocanes back at a height of 40 to 46 inches.

What is the best way to cut blackberry bushes?

By Hand

  1. Cut back vines and canes to about 6 inches.
  2. Pull out manageable, small vines as long as you are able to get up most of the root as well.
  3. Dig around the crown of large canes using a shovel, pitchfork or trowel.
  4. Repeat digging and cutting twice a year for one to three years.

What can you not plant next to blackberries?

Choose the site for your blackberry bramble the year before planting. Blackberries should not be cultivated in soil that has previously grown tomatoes, potatoes, eggplant, peppers, strawberries, or any other type of berry bush or bramble.

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When should I cut back thornless blackberries?

Pruning Thornless Blackberries

In late June or July, the first-year canes should be tip-pruned to 36 inches for erect and 48 inches to 54 inches for semi-erect blackberry types. Trim the resulting lateral branches to 18 inches in the early spring of their second year, but do not prune the main floricanes.

Are you supposed to cut back blackberry bushes?

After the canes have produced fruit, you should prune them back to the ground to leave room for the stronger, 1-year-old canes. Some pruning should be done every spring to keep the plants from becoming tangled and to improve their ability to bear. Prune trailing blackberries in the spring for good growth habits.

Why is my blackberry bush not producing fruit?

Environmental Factors Keep Blackberries from Fruiting

Soil – Have your soil tested to make sure that a healthy balance of nutrients is in the soil. Amend the soil if you find this is not the case. Wild or poor quality blackberry bushes can come from stock that simply cannot produce large, quality blackberry fruits.

What month do you plant blackberries?

Planting berries

Raspberries and blackberries can be planted from late fall through early spring. These plants tend to spread, so select a location that will naturally limit their growth. Placing them next to fences and buildings is ideal because they can provide trellising.

What is the best fertilizer for blackberries?

Use a complete fertilizer, like 10-10-10, in the amount of 5 pounds (2.2 kg.) per 100 linear feet (30 m.) or 3-4 ounces (85-113 gr.) around the base of each blackberry. Use either a complete 10-10-10 food as fertilizer for your blackberries or use compost, manure or another organic fertilizer.

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Do erect blackberries need a trellis?

Trailing blackberries require a trellis system to support the fruiting canes. Erect blackberries grow without support, but trellises will keep the planting neater and make harvest easier. Either two- or three-wire trellis systems are generally used.

How long do thornless blackberries live?

Though it takes two years after planting to produce berries, blackberry plants can live up to 15 years in your garden.

How do you deal with overgrown blackberry bushes?

The first step in renovating a patch like this (or any other kind of overgrown bramble) is to prune out the worst canes. I snip off all of the rooted canes in the aisle and then cut the plants back to a main stem with branches six to twelve inches long. Meanwhile, I pull or cut out dead canes from previous years.

How do I get rid of invasive blackberries?


  1. Apply a topical herbicide such a glyphosate or triclopyr to the leaves and stems of the bush.
  2. Alternately, treat the soil around the bush with a herbicide such as tebuthiuron.
  3. Retreat the blackberry bushes the following season if necessary.

How deep do blackberry roots go?

Some people think they go down as much as they are tall. But that’s a misconception, as blackberry roots grow to a maximum depth of between 12″ and 16″, occasionally longer. This means they can quite easily be grown in pots.

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