Blackthorn, Sloe

Prunusspinosa

Family
Rosaceae (ro-ZAY-see-ee)
Genus
Prunus (PROO-nus)
Species
spinosa (spy-NO-suh)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
Smooth
Textured
Height
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
Spacing
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Handling plant may cause skin irritation or allergic reaction
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
White/Near White
Bloom Time
Late Winter/Early Spring
Other Details
Category
Shrubs
Trees
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Propagation Methods
From semi-hardwood cuttings
From hardwood cuttings
From hardwood heel cuttings
From seed; direct sow outdoors in fall
By stooling or mound layering
Seed Collecting
Remove fleshy coating on seeds before storing
Regional

This plant is said to grow outdoors in the following regions:

Browns Mills, New Jersey

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Gardener's Notes:

3
positives
1
neutral
1
negative
Sort By:
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W
Browns Mills, NJ | October 2019 | positive

I was introduced to homemade sloe gin while serving in the military in the UK. It is a wonderful thing bearing little in common with the ...Read More

D
D
(Zone 7b) | April 2011 | positive

Similar to Hawthorn and often grows alongside it; the two trees have very similar flowers but blackthorn flowers about 6-7 weeks before h...Read More

M
| December 2009 | positive

The fruit even now in December there are here in Bosnia (but the snow has fallen and can not pick them any more). I like to eat it fresh,...Read More

M
M
| February 2003 | negative

I am a forester based in the UK - some of our work includes the clearance of shrubs such as blackthorn - I have experienced skin infectio...Read More

P
(Zone 8a) | September 2002 | neutral

This is a suckering shrub/small tree native to the UK and Northern Europe. It is much used as a hedging plant, forming an impenetrable th...Read More

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