Planting guide

When to plant Blackthorn?

Best month and methodPrunus spinosa

Plant your blackthorn in October, November, December, February and March — the optimal month is usually December.

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The next planting window is October.

Blackthorn (Prunus spinosa)
Foto: Rasbak / Wikimedia Commons / CC BY-SA 3.0

Spacing

Distance between plants

50 cm

For 1 m²

4 plants

For an X m² border, calculate: X × 4 plants.

Step by step: plant blackthorn

Blackthorn thrives in full sun or partial shade and tolerates a wide range of soils, including loam, clay, chalk, and sand, making it one of the most adaptable native shrubs. It prefers well-drained ground but copes well with heavier clay once established. Plant bare-root specimens between October and March, avoiding periods when the soil is frozen or waterlogged; container-grown plants can go in at any time during this window, though autumn planting gives roots the best start. Prepare the site by removing weeds and digging in a little organic matter if your soil is very poor, though blackthorn is unfussy and rarely needs enrichment. Dig a hole roughly twice the width of the root ball and deep enough so the soil mark on the stem sits level with the surrounding ground. Space plants 50 cm apart if you're establishing a hedge or thicket; for a specimen shrub, allow at least 1.5 metres from other plants to accommodate its suckering habit. Backfill with the excavated soil, firming gently with your heel to eliminate air pockets, then water thoroughly even if the ground is damp. Apply a 5 cm layer of well-rotted compost or bark mulch around the base, keeping it clear of the stem itself to prevent rot. Blackthorn suckers freely from the roots, so consider this spreading tendency when choosing your planting spot—it's excellent for informal hedging or wildlife barriers but can become invasive in a small border. Staking is unnecessary; the shrub establishes quickly and develops a sturdy, twiggy framework on its own.

More about blackthorn

Also plant in October, November, December, February and March