- Botanical name: Dahlia imperialis
- Common name: Tree dahlia
- Family: Asteraceae
- Plant Type: Perennial, Deciduous
Pink
Green
- Key features:
- Dramatic foliage
- Flowers
Giant dahlia or tree dahlia, Dahlia imperialis, is an enormous species growing to 3m, bearing thick, bamboo-like stems and large, elder-like leaves. It makes a fantastic foliage plant in its own right, however, if grown in a sheltered spot in a mild region, it may bear single, pink-purple blooms with orange-centres, from late October onwards. It’s a great choice for a tropical border but may also be grown in a large greenhouse or conservatory, where its chances of flowering are greatly increased.
Grow Dahlia imperialis in moist but well-drained soil in a sheltered spot in full sun. There’s usually no need to stake. As with all dahlias, lift the tubers and store over winter.
How to grow Dahlia imperialis
-
Plant size
3m height
1.5m spread
-
Aspect
South facing, west facing
- Sun exposure: Full sun
- Hardiness: Tender
- Soil type: Well drained / light / sandy
Plant calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | ||||||||||||
| Plant |
J
Do not Plant in January |
F
Do not Plant in February |
M
Do not Plant in March |
A
Do not Plant in April |
M
Do Plant in May |
J
Do Plant in June |
J
Do not Plant in July |
A
Do not Plant in August |
S
Do not Plant in September |
O
Do not Plant in October |
N
Do not Plant in November |
D
Do not Plant in December |
| Flowers | ||||||||||||
| Flowers |
J
Plant does not flower in January |
F
Plant does not flower in February |
M
Plant does not flower in March |
A
Plant does not flower in April |
M
Plant does not flower in May |
J
Plant does not flower in June |
J
Plant does not flower in July |
A
Plant does not flower in August |
S
Plant does not flower in September |
O
Plant does flower in October |
N
Plant does flower in November |
D
Plant does flower in December |
Dahlia imperialis and wildlife
Dahlia imperialis has no particular known value to wildlife in the UK.
Is Dahlia imperialis poisonous?
Dahlia imperialis has no toxic effects reported.
No reported toxicity to Birds
No reported toxicity to Cats
No reported toxicity to Dogs
No reported toxicity to Horses
No reported toxicity to Livestock
No reported toxicity to People
Plants that go well with Dahlia imperialis
