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How to Grow Blackberries | Planting & Establishment

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Blackberry (Rubus fruticosus agg.)

Blackberries ripening from red to black on the cane — “Kolpa River 1255” by Klemen Čotar is licensed under CC BY-SA 4.0. Source: Wikimedia Commons

9 sources cited · Verified

The short answer

Site
soil pH 5.6–6.5
Biggest risk
Raspberry cane blight

Blackberries (Rubus fruticosus agg.) — perennial (biennial canes).

Unlike an annual crop, the work here is front-loaded into establishment: get the planting and the site right and the same plants crop for several seasons.

Core growing advice on this page is checked against named horticultural and university-extension sources — see References.

Soil & Growing Conditions

A blackberry bush in flower — “Blackberry bush flowers, Capen Hill High Rocks, 2025-06-02” by Peter Cooper Jr. is licensed under CC0. Source: Wikimedia Commons
“Blackberry bush flowers, Capen Hill High Rocks, 2025-06-02” by Peter Cooper Jr. is licensed under CC0. Source: Wikimedia Commons.

Soil pH range

5.6 6.5

Span reflects genuine variation between the cited authorities, not a single agreed figure.

Growth Stages

Blackberries ripening from red to black on the cane — “Kolpa River 1255” by Klemen Čotar is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Kolpa River 1255” by Klemen Čotar is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.
Stage BBCH Notes
Planting and initial cut-back 0 Plant mid-autumn to early spring; cut stems back to 20-25cm from the ground after planting (RHS).
First-year cane establishment 3 New spring growth is tied to support wires; no fruiting occurs in year one. Side-shoots trimmed to 7.5cm in first winter (RHS).
Second-year fruiting 6 Fruiting begins on the previous year's stems, with new stems emerging from the base; fruit ripens mid-summer to early autumn (RHS).
Post-harvest pruning 9 Old fruited stems removed at the base after harvest; new stems trained along horizontal wires spaced 45cm apart (RHS).

Quick Facts

Close-up of pale pink blackberry flowers — “By the side of the road between Hirwaen and Llanbedr DC, Sir Ddinbych, Moel Famau AUOB 01” by Llywelyn2000 is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“By the side of the road between Hirwaen and Llanbedr DC, Sir Ddinbych, Moel Famau AUOB 01” by Llywelyn2000 is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.
Factor Value
Soil pH 5.6 - 6.5
Drainage moisture-retentive, free-draining
Lifecycle perennial (biennial canes)
Edible parts fruit

At a Glance

Blackberries at mixed stages of ripeness on the bush — “Plodovi divlje kupine, opština Krupanj” by Ljiljana Krupanj is licensed under CC BY 4.0. Source: Wikimedia Commons
“Plodovi divlje kupine, opština Krupanj” by Ljiljana Krupanj is licensed under CC BY 4.0. Source: Wikimedia Commons.
Rubus fruticosus agg. Blackberry Raspberry cane blight Raspberry beetle DISEASES PESTS

Harvest & Storage

Blackberries at mixed stages of ripeness on the bush — “Plodovi divlje kupine, opština Krupanj” by Ljiljana Krupanj is licensed under CC BY 4.0. Source: Wikimedia Commons
“Plodovi divlje kupine, opština Krupanj” by Ljiljana Krupanj is licensed under CC BY 4.0. Source: Wikimedia Commons.

When to pick: Varies by cultivar; typical UK cultivar harvest window August-September (e.g. mid-season "Thornfree" fruits August-September).

Diseases

A blackberry bush in flower — “Blackberry bush flowers, Capen Hill High Rocks, 2025-06-02” by Peter Cooper Jr. is licensed under CC0. Source: Wikimedia Commons
“Blackberry bush flowers, Capen Hill High Rocks, 2025-06-02” by Peter Cooper Jr. is licensed under CC0. Source: Wikimedia Commons.
Raspberry cane blight

Paraconiothyrium fuckelii

RHS raspberry cane blight page: "Blackberries can also be affected, but on them the disease is of little significance."

Pests

Blackberries ripening from red to black on the cane — “Kolpa River 1255” by Klemen Čotar is licensed under CC BY-SA 4.0. Source: Wikimedia Commons
“Kolpa River 1255” by Klemen Čotar is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.
Raspberry beetle

Byturus tomentosus

RHS raspberry beetle page: "Plants affected: Raspberry, blackberry, tayberry, loganberry" -- blackberry named explicitly.

References

  1. country=International

  2. country=US

  3. country=US

  4. Mid-autumn to early spring is ideal planting time, though container-grown plants can be planted year-round. Spacing 2.5-3.5m for moderate varieties, up to 4m for vigorous types. After planting, cut stems back to 20-25cm from the ground; tie new spring growth to support wires (no fruiting in year one); trim side-shoots to 7.5cm in the first winter. From year two, fruiting begins on the previous year's stems, with new stems emerging from the base annually. Fruits ripen from mid-summer to early autumn depending on variety; pick as soon as ripe, as fruit does not ripen further after picking. Annual pruning after harvest removes old fruited stems at the base, training new stems along horizontal wires spaced 45cm apart. Propagated by stem-tip layering: rooting the tips of vigorous young stems into the ground in mid- to late spring.

  5. country=UK

  6. country=UK

  7. country=UK

  8. country=UK

  9. country=UK

9 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.

Frequently Asked Questions

What soil pH do blackberries need?

A pH of about 5.6–6.5. That span reflects genuine variation between the authorities we cite rather than a single agreed figure — the References section lists each source's exact range.

What problems affect blackberries?

Our data links 1 disease and 1 pest to this crop. See the sections above for each one and how to manage it.

Plan next season before the problems start

This page gives you the thresholds; the planner turns them into your own calendar. It works from what you can observe and measure in your garden rather than from dates written for somebody else’s latitude.

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SoilCommander Editorial Team

Science-based growing guides · Thresholds that hold in any climate

This guide states the conditions the plant itself responds to — soil temperature, frost tolerance, day length — rather than dates, because the same calendar month means opposite seasons in the northern and southern hemispheres. Anything genuinely restricted to one part of the world is named as such rather than presented as universal. Written and maintained by our editorial team against international horticultural research and extension sources.

Vegetable Growing Guides

Last verified 2026-08-06

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