Blackthorn is native throughout Europe and the Middle East, and has even found its way to the Caucasus mountains and North Africa. Sloes belong to the genus Prunus and are members of the rose family (Rosaceae). Prunus spinosa is more commonly known as blackthorn or sloe. Sloe berries: how to identify the fruits of the blackthorn.Sloe blossom: when does blackthorn flower?.Plant the seedlings into a sunny, sandy bed at least 75 days before the first frost in autumn, or shelter the seedlings in a cold frame until the following spring if it is too late in the year for planting. Maintain the same light and moisture conditions provided to the seeds during germination until they grow to 4 inches in height.Ĩ. Watch for sprouting one month after sowing.
Protect the seeds from direct sunlight during the hottest part of the day since the soil will warm too quickly and dry out.ħ. Place the pots outdoors in a sheltered spot where they will be exposed to direct sun in the morning and afternoon. Maintain moisture at a 3-inch depth during the germination process.Ħ. Water the seeds to a depth of 3 inches after planting them. Sow one seed in each pot at a depth of 1 inch.ĥ. Fill 8-inch plastic pots with garden soil taken from the bed where the trees will eventually be planted. Or sow indoors in the propagator or potsĤ. Sow the seeds the following spring once outdoor temperatures rise above 65F (+18C) during the day and 48F (+8C) at night. Keep the sand barely moist during the cold stratification period.ģ. Stratify seeds in a plastic bag full of moist sand inside the refrigerator for 90 days. Lay the seeds on a flat surface to dry for several hours.Ģ. Soak the seeds in a bowl of cool water overnight. Soil type - Light (sandy), medium (loamy), heavy (clay), well-drained soilġ. The plant can tolerate maritime exposure. It can grow in semi-shade (light woodland) or no shade. The plant prefers acid, neutral and basic (alkaline) soils and can grow in very alkaline soil. The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. It is in flower from March to April, and the seeds ripen in October.
A decidious Shrub growing to 3m at a medium rate.
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