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Delphinium grandiflorum 'Summer Blues' is a wonderfully compact plant that is blanketed with 1½" sky blue flowers in early summer. 'Summer Blues' has better heat tolerance and is earlier blooming than other Delphiniums.
|Light:||Partial Shade to Full Sun|
|Height:||10 inches to 1 foot|
|Zones:||3a to 8b|
|Bloom Seasons:||Late spring, Early summer|
|Special Features:||All or parts of this plant are poisonous, Attracts birds, Deer resistant, Naturalizing, Not North American native, Rabbit resistant|
|Shape:||Upright or erect|
|Fertilizer:||Miracle-Gro® Water Soluble All Purpose Plant Food|
|Want to know where Dwarf Delphinium will thrive in your house or garden? The EasyBloom Plant Sensor will give you a plant's-eye view of your environment to measure soil, sunlight, temperature and humidity.||
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In areas that have mild winters, sow Delphinium seeds in flats or pots in the summer. Transplanted plants should be planted in early fall for spring and summer flowering.
Delphiniums are perennial plants although they are sometimes treated like an annual or biennial. Delphinium does best in full sun.
Many Delphiniums are blue, but they come in several colors including white, various shades of red, pink, lavender and purple.
Plants need rich soil. Poor soil should be amended with soil conditioners, such as lime for strongly acidic soils. It is important not to cover the root crowns with soil.
Thrive with regular fertilization; during growth, every 2 to 3 weeks.
Deadhead somewhat regularly. In fall, cut plant to the ground.
Slugs, snails, and cyclamen mites. Other problems include Southern blight, powdery mildew, bacterial and fungal spots, crown and root rot, gray mold, white rot, rust, damping off, white smut, and leaf smut.