Delphinium 'Sweetheart'
delphinium 'Sweetheart'
A deciduous, herbaceous perennial that reaches approximately 1.8m in height when in flower. It forms a mound of green, deeply lobed leaves and stately flower stems of numerous rich rose to soft pink flowers with contrasting white centres, from summer to autumn
Size
Growing conditions
Colour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | ||||
|---|---|---|---|---|
| Summer | ||||
| Autumn | ||||
| Winter |
Position
Aspect
Exposure
Botanical details
- Family
- Ranunculaceae
- Native to GB / Ireland
- No
- Potentially harmful
- Humans/Pets:, Harmful, if, eaten., Wear, gloves, and, other, protective, equipment, when, handling., For, further, information, and, contact, numbers, regarding, pets,, see, the, HTA, guide, to, potentially, harmful, plants
- Genus
Delphinium can be annuals, biennials or perennials, with palmately lobed basal leaves and showy bowl-shaped flowers in spikes, racemes or panicles
- Name status
Accepted
How to grow
Cultivation
Grow in fertile, well-drained soil in full sun. Shelter from strong winds and provide support. Divide every 2-5 years to maintain vigour. See staking: perennials and delphinium cultivation for further advice
Propagation
Propagate by division or by basal softwood cuttings in spring
Suggested planting locations and garden types
Pruning
Deadhead main stem after flowering to encourage side shoots to flower. Cut back to ground level in autumn
Pests
May be susceptible to aphids, slugs, snails, leaf miners and caterpillars
Diseases
May be susceptible to powdery mildews, delphinium black blotch, crown rot and viruses
Get involved
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