A tall evergreen shrub, wintergreen barberry is the hardiest of the evergreen barberries. Its spiny, glossy green leaves become tinged red in the autumn and winter, and it has showy yellow flowers that develop into small, waxy blue fruits that turn almost black when fully mature. This shrub has large, fierce three-parted spines that make it almost impenetrable, especially when used in hedges. Wintergreen barberry prefers full to part-sun and is very site adaptable and low maintenance.
Information source: http://learn2grow.com/plants/berberis-julianae/
Genus - Berberis
Species - Julianae
Common name - Wintergreen Barberry
Pre-Treatment - Required
Hardiness zones - 5 - 9
Height - 1,80 - 3 m
Spread - 1,8 - 2,40 m
Plant type - Shrub
Vegetation type - Evergreen
Exposure - Full Sun, Partial Sun
Growth rate - Medium
Soil PH - Acid, neutral
Soil type - Loam, well drained
Water requirements - Average, drought tolerant
Landscape uses - Feature Plant, Foundation, Hedges, Mixed Border, bonsai
Bloom season - May - June
Leaf / Flower color - Dark Green / Yellow, Yellow Green
For faster germination, soak the seeds in slightly hot water for 24-48 hours, followed by 90 days cold and moist stratification before sowing in sterile gardening soil.
Stratification will break seeds dormancy. It creates a cold and moist environment for the seeds. Mixed in seeds with slightly moistened vermiculite or peat, only damp in a ziplock bag. Close zip bag shut and store it in the salad crisper compartment of your refrigerator. If any seeds begin to sprout during the cold stratification, simply remove the seed and plant.
Keep damp soil, not soaking wet. Keep pot in warm situation +20-+24C.
Germination can take 2-3 months. It can be more depending on their degree of unbroken dormancy, don't give up.
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