Imperial Mix, Delphinium Seeds

Imperial Mix Delphinium Seed

Tall flower spires blend pink, blue, lavender, rose, and white
Bushy Mediterranean annuals create vertical garden interest
Beneficial insects visit the nectar-rich blooms
Excellent stems add height to fresh arrangements

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Key Attributes

Botanical Name

Delphinium consolida

Days to maturity

115 Days

Sun

Full Sun

Packet

25 Seeds

About Imperial Mix, Delphinium Seed, Delphinium Seed

The Imperial Mix Delphinium blooms bushy, brightly colored blooms that makes an excellent cut flower that attracts many beneficial insects. This Mediterranean annual produces spires of pink, blue, lavender, rose and white flowers. This variety can be grown in full sun or partly shaded areas and tends to be a good re-seeder. The Imperial Mix Delphinium is a great cut flower and can be used in the wildlife garden to attract butterflies and hummingbirds.

Growing details

Planting

Sow Depth

1/8"

Days to Germination

14–21 days

Germination Type

G - Cool-Soil Germination

In-row plant spacing

18"

Plant profile

Life Cycle

Annual

Plant Height

60 inches

Growth Habits

Upright

Seed & variety

Seeds Per Ounce

8,875

Color

Multicolor

Seed Type

Open Pollinated

Before Planting

Before planting Delphinium, select a full-sun site with afternoon shade in hot climates, rich well-drained soil, and protection from strong wind. Incorporate compost and correct pH and fertility from a soil test. Provide any recommended cold treatment for seed and install support stakes before planting tall types.

Planting

Sow delphinium outdoors in fall or start indoors according to its germination requirement; many perennial species benefit from a cool period before warmth. Maintain even moisture during germination and provide bright light after emergence. Harden indoor-grown seedlings before planting outdoors. Transplant while young to minimize root disturbance, and thin direct sowings after sturdy true leaves develop.

Watering

Provide consistent moisture for delphinium without saturating the soil. Water at the base before plants wilt, increasing frequency during heat, wind, or peak flowering.

Fertilizer

Fertilize delphinium modestly as new spring growth begins, following soil-test recommendations. Stop after midsummer so late tender growth does not reduce winter hardiness.

Harvesting

Delphinium flowers are ready when stems are firm and blooms show mature color without fading. Cut during cool, dry conditions; for seed, leave selected heads until brown and dry.

Tips

Stake delphiniums before tall flower spikes develop and cut spent stalks back for possible rebloom. All plant parts are toxic if ingested, so wear gloves and keep them away from children and pets.

Pests & Diseases

Crown and root rots, southern blight, powdery mildew, Botrytis, and bacterial black leaf spot can strike delphiniums. Sudden warm-weather collapse with small tan sclerotia near the base indicates southern blight. Remove the plant and surrounding debris; improve drainage and avoid replanting another susceptible perennial immediately.

Delphinium can attract aphids, thrips, spider mites, Japanese beetles, and slugs. Scout flowers and new growth regularly, handpick when practical, and protect beneficial insects with targeted controls.