larkspur, summer nights
Delphinium Grandiflorum ‘Summer Nights’
Grow conditions
- Sunlight
- Full sun, Partial sun
- Hardiness zone
- 3-7
- Minimum temperature
- −40°F (−40°C)
- Soil type
- Loam, Well-drained
- Soil pH
- Neutral, Alkaline
Plant traits
Mature height12 in-18 in
Mature width12 in-18 in
Plant typePerennials
Bloom seasonSummer
Foliage typeDeciduous
Tolerance & safety
Drought tolerantNo
Pet safetoxic
Deer resistantNo
Pollinator-friendlyBees, Hummingbirds
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