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Delphinium grandiflorum

Pronunciation: Del-fin-ee-um grand-ih-flo-rum
Family: Ranunculaceae, buttercup
Common Name: Delphinium
Plant Type:
  • perennial
Height to: 2'
Width to: 2'
USDA Hardiness Zones:
  • -30 to -40ºF ZONE 3
  • -20 to -30ºF ZONE 4
  • -10 to -20ºF ZONE 5
  • 0 to -10ºF ZONE 6
  • 10 to 0ºF ZONE 7
  • 20 to 10ºF ZONE 8
Sun Exposure:
  • part sun
  • full sun
Bloom Season:
  • early summer
  • mid summer
  • late summer
Bloom Description: Delphinium grandiflorum bear violet to blue or white flowers, loose inflorescence, more rounded shape
Soil Type: Well-drained, organic
Pests and Diseases: Delphinium grandiflorum is susceptible to bacterial leaf spot, crown rot and black leg; fungal crown and stem rots, damping-off, powdery mildew, leaf spots; viruses; aphids, cutworms, borers, leaf miners, beetles, sowbugs, root mealybug, mites, nematodes, slugs
Propagation: Fresh seed or stratify, solid spring basal cuttings
Notes for Identification: Growth rate: moderate to fast foliage: palmately lobed or divided light: sun landscape habit, uses: front to back of borders other interest: hollow and brittle stems, short-lived in the south other culture: require heavy fertility, staking of tall cultivars source: perry's perennial pages, university of vermont and the american horticultural society a to z encyclopedia of garden plants pin it
Seed photo: 0
Seed Label: 0
Located in: Perennials
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