ENGLISH NAME: Blackthorn, Sloe
LATIN NAME: Prunus spinosa
LOCAL NAMES:
Bulgaria: трънка (trŭnka)
Czechia: trnka obecná
Turkey: dikenli erik
Georgia: კვრინხი
COUNTRY: Bulgaria;
Czechia; Turkey; Georgia
WHERE TO FIND IT:
Region: Hedgerows, woodland edges, scrublands
Elevation: Sea level up to ~1,600 m
Terrain: Clay or loamy soils in semi-open habitats
DESCRIPTION:
A thorny deciduous shrub or small tree, 2–4 m tall. Branches bear sharp thorns,
and leaves are small, oval with serrated margins. In early spring before
leaf-out, it produces clusters of white flowers (~1–1.5 cm diameter). Fruits
(“sloes”) are 1 cm drupes, dark blue-purple with a waxy bloom.
USABLE PARTS: Fruits (sloes);
bark
MEDICINAL
PROPERTIES:
Sloes: High in vitamin
C and tannins; astringent—traditionally used for diarrhea, tonics, and skin
complaints.
Bark: Rich in tannins;
tonic and astringent—used in infusions or decoctions for mild inflammation and
digestive support.
UNDESIRED EFFECTS:
Excessive tannin intake can cause stomach upset, nausea, or constipation. Use
preparations in moderation.
COMBINING WITH OTHER
MEDICINES:
Avoid combining with other high-tannin herbs or strong astringents to prevent
excessive drying of tissues.
PREPARATION:
Sloe
Infusion/Tea:
Steep 1–2 tsp dried sloes in hot water for 10–15 min; strain and drink.
Sloe Tincture: Macerate dried
sloes in alcohol or glycerin for 4–6 weeks; strain; dilute before use.
Bark Infusion: Grind dried bark
to powder; steep 1 tsp in hot water 10–15 min; strain.
Bark Decoction: Simmer 1 tsp
powdered bark in water for 20–30 min; strain.
HARVEST TIME:
Sloes: Late summer to
early autumn (when fully dark and slightly soft)
Bark: Late autumn or
winter (dormant season)
HARVEST METHOD:
Sloes: Gently pluck
ripe fruits by hand, harvesting only a portion to sustain wildlife.
Bark: Use a sharp
knife or pruners to remove small strips of bark; avoid girdling stems.
CONSERVATION
(STORAGE):
Sloes: Freeze fresh
sloes on trays, then transfer to sealed bags; or air-dry until leathery, then
store in airtight jars in a cool, dark place.
Bark: Air-dry strips
in a ventilated, shaded area until brittle; store in airtight containers away
from light and moisture.