Towering spires densely packed with blue, purple, white or mauve flowers, each with a contrasting central 'bee'. A classic seed strain for the back of the border; all parts are toxic if eaten.
At a glance
- Plant type: Perennial
- Mature size: 1.8 m H × 60 cm W
- Aspect: full sun
- Water: regular, moderate watering
- Frost: hardy
- Maintenance: moderate maintenance
- Origin: Exotic
About Pacific Giant Delphinium
Delphinium 'Pacific Giants' is a fast-growing perennial in the Ranunculaceae family. It reaches around 1.8 m tall and 60 cm wide at maturity, with deciduous foliage. Blue, purple and white flowers appear in spring and summer.
Where to grow Pacific Giant Delphinium
Pacific Giant Delphinium suits cool-temperate and warm-temperate climates and grows best in full sun. It is frost hardy and shrugs off cold winters.
Soil & planting
Pacific Giant Delphinium does best in free-draining and clay soil. Plant into well-prepared ground, firm the soil around the roots and water deeply to settle it in.
Watering & feeding
Pacific Giant Delphinium does best with regular, moderate watering. Feed as new growth begins, following the rate on a balanced garden fertiliser. For the first year, favour occasional deep watering over frequent shallow drinks so roots move into the surrounding soil.
Pruning & care
Prune Pacific Giant Delphinium after flowering to keep it compact and encourage the next flush of blooms. For most gardens, maintenance is moderate maintenance.
Using Pacific Giant Delphinium in the garden
Pacific Giant Delphinium earns its place for feeding bees and pollinators, cut flowers for the vase and a feature or specimen planting.
Companion planting & design
Pacific Giant Delphinium sits most comfortably beside plants adapted to regular, moderate watering and cool-temperate climate. A small cluster gives stronger visual impact than isolated plants scattered through the garden.
Good to know
Note that it is toxic to cats and dogs, so site it away from pets that chew.
Buying Pacific Giant Delphinium
Plant Sale lists Pacific Giant Delphinium as potted plants and seed. Availability is confirmed when you request a quote; use the panel above to register interest.
Prefer to grow it yourself? See the Pacific Giant Delphinium seed sowing guide for depth, timing and germination.
