General Description | This plant is a large deciduous shrub with dark green leaves, exfoliating bark on older branches and beautiful flower panicles with clusters of cream coloured petals which bloom in the late spring and persist generally into the first winter frost. |
ID Characteristic | Large conical shaped clusters of tubular, four petaled flowers. Very noticeable sweet scent emanates from the nectar of the flowers. Older branches have exfoliating bark. |
Shape | Vertical, tall growing, weeping shrub that could potentially be a small tree in optimal conditions. |
Landscape | Buddleja macrostachya is commonly used as a garden plant for its beautiful white/cream coloured flower panicles and its ability to recover from harsh pruning. The sweet smelling nectar attracts many species of wildlife ranging from butterflies to hummingbirds as well as some moths and honey bees. |
Propagation | It can be propagated through seeds or through a semi-hard wood cuttings. If propagated through seed (main form of propagation) it must be sown in the early spring in loose, well-drained soil with added compost and ample space as the plant grows fast and will shade out other plants. |
Cultivation | This plant is hardy and is not particular about soil conditions, making it easy to grow along roadways and poor to lean soils. However it does best in well drained but soil moist with a slightly alkaline pH. It should be planted in full sun. |
Pests | This plant is very disease resistant but attracts pests such as capsid caterpillars and red spider mites. Red spider mites seem to become more of a problem in greenhouse cultivated plants or if the plant is under stress or drought. |
Notable Specimens | Westonbirt, The National Arboretum, Tetbury, Gloucestershire, England. |
Habitat | Typically found in areas of well drained but moist soils, around rivers or slow streams where it can grow in dense clusters and out compete other naturally growing vegetation. |
Bark/Stem Description | Stems are small and square with younger growth showing brown striping and older bark exfoliating. |
Flower/Leaf Bud Description | Buds are small, generally 3 - 4 mm, and grow in clusters. |
Leaf Description | Elliptical to narrowly elliptical shaped leaves ranging in size from 1.5 - 7 cm with dark, glossy green colour on top and a lighter grey on the bottom coated in small, fuzzy hairs. Leaf margins are finally crenate - serrate with lateral venation. |
Flower Description | Flowers are tubular in shape with four petals and grow in conical clusters that range from 10 - 30 cm long. The petals are a cream colour on top with an orange throat and anthers. Blooming period takes place in late spring and the flowers will remain until the first frost of winter. This plant has adapted to suit avian pollinators such as hummingbirds. |
Fruit Description | Small, capsule shaped fruits, generally 1 cm long and 2 mm wide containing many seeds making it easy for the plant to spread naturally. |
Colour Description | Buddleja macrostachya is a very colourful plant. Throughout the growing season it is decorated with large panicles of cream and orange coloured flowers and rich green foliage but after the dormant season begins this plant has an interesting brownish grey exfoliating bark that holds winter interest. |
Texture Description | This plant has a medium to rough texture. |