Dahlia imperialis (Tree Dahlia)
Botanical Information
Family | Asteraceae |
Genus | Dahlia |
Species | imperialis |
Category | Bulbs, Perennials, Tropicals |
Origin | Mexico and Guatemala. |
Details
USDA Hardiness Zone | 7-10 |
USDA Hardiness Ref. | |
Canadian Hardiness Zone | Requires cool season protection under glass. |
Canada Hardiness Ref. | |
RHS Hardiness Zone | H2- H6 |
RHS Hardiness Ref. | |
Temperature (°C) | -17.8 - 4.4 |
Temperature (°F) | 0-40 |
Height | 2-4 m |
Growth | Fast |
Flowering Period | September, October, November |
Description and Growing Information
Propagation | Propagated from tubers or cuttings. Tubers planted 10 cm apart, in full sun with space to grow. Best planted in mid-spring when the last frost has passed. |
Cultivation | Grows well in full sun and rich soils. |
Notable Specimens | Bok Tower Gardens, Lake Wales, Florida, United States of America. |
Habitat | Must be grown in sunny, humid and consistently warm areas for the plant to bloom. |
Flower Description | Flower colour varies from pale pink to white and purple. The double flowers are typically 10-15 cm across. |