Rotheca myricoides or Blue Butterfly Flower is a shrub that is grown primarily for its flowering panicles of blue and fragrant flowers that last from April until September. Flowering attracts butterflies and bees.
It reaches 3 m in height but may be pruned.
This shrub is hardy in USDA zone 8 and resistant to frost till -9 ° C, but the plant dies back to the root ball and grows back in the spring. It is recommended to treat is as an orangery plant and keep it inside in winter at 5 °C.
Rotheca myricoides is an evergreen shrub up to 3 m high and wide.
It has opposite egg shaped, sharply toothed, 7.5-10 cm long leaves.
The inflorescences are appear at the end of long arching branches. These are panicles 10-25 cm long, composed of individual flowers about 2.5 cm long. The flowers have 4 pale blue lobes and 1 darker blue-violet elongated central lobe, making them look like little butterflies.
Flowering occurs throughout the summer into the fall.
Blue Butterfly Bush, Blue Butterfly Flower, Blue Cat’s Whiskers, Butterfly Clerodendrum, Butterfly Bush, Blue Glory Bower, Blue Wings
Clerodendrum myricoides, Clerodendrum ugandense, Cyclonema myricoides, Siphonanthus myricoides, Spironema myricoides
Myricoides: resembling a kind of Myrica, with reference to the shape of the sheet
Grows in thickets in rocky areas along streams and at the edges of coniferous forest, between 0 and 1,500 m altitude.
USDA zones 9-11, -9 °C
Seed, green stem cuttings or suckers
Rich and well drained
Sun, partial shade
Keep the soil moist, especially in summer when growing and flowering
Universal liquid fertilizer once a week in growing season, once a month in winter.