Grown for its beautiful clusters of elongated flowers, butterflybush is a tough medium-sized shrub with an upright to arching habit. Originating from China and Japan, it has green to gray-green leaves and produces large clusters of lilac-colored flowers at the ends of its branches. These appear from midsummer to frost, but will continue to bloom with greater regularity if spent flowers are removed. In climates with mild winters plants may be semi-evergreen.
Butterflybush grows best in full sun and can tolerate a wide range of well-drained soils. Once established, it is quite drought tolerant and requires little maintenance aside from regular pruning. Severe hard pruning each year will keep overall size more compact.
This is the best shrub for attracting clouds of butterflies. The only setback to Buddleja davidii is its tendency to self-sow in the garden and beyond. In fact, in many regions this is considered an invasive species.
Enjoy butterflybush in sunny mixed borders and foundation plantings.
Information source: http://www.learn2grow.com/plants/buddleja-davidii/
Genus - Buddleja
Species - Davidii
Common name - Butterfly Bush
Pre-Treatment - Not-required
Hardiness zones - 5 - 9
Height - 1,50 - 3 m
Spread - 1,20 - 2,40 m
Plant type - Shrub
Vegetation type - Deciduous
Exposure - Full Sun, Partial Sun
Growth rate - Fast
Soil PH - Acid, neutral
Soil type - Loam, sand, well drained
Water requirements - Average, drought tolerant
Landscape uses - Cutflower, Feature Plant, Foundation, Mixed Border
Bloom season - July - September
Leaf / Flower color - Light Green / Lavender, Blue Violet
Sow on the surface of a good quality compost. Firmly flatten the surface.
Germination rate is very high, so do not sow the seeds thickly and try to keep the seeds spread out a little from each other.
For germination light and humidity needed. Cover the pots with clear plastic or glass. Keep in very bright place (no direct sunlight).
Germination - 2-3 weeks.fore growth starts in the second year. It is possible for vigourous plants to produce flowers in the first year.
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