Delphinium Mixed Color Rocket Larkspur Seeds

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$16.89
$16.89
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Delphinium mixed color rocket larkspur seeds grow tall flowering plants with colorful upright spikes for garden beds, borders, and seasonal flower areas. These seeds suit outdoor planting in cool to mild weather and perform best in loose, well-drained soil. Plants need bright sunlight, regular watering, and support in windy spots. Their tall stems add vertical garden interest and can be used for fresh flower arrangements. Start seeds carefully and transplant when seedlings are strong enough. Suitable for home garden catalog use and planting records.
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Delphinium Mixed Color Rocket Larkspur Seeds

$16.89

Planting Season

Winter to spring

Light Requirement

Full sun to partial shade

Plant Height

60–120 cm

Indoor/Outdoor

Outdoor
Planting Information
Life Cycle Annual
Plant Characteristics flowers and fine foliage
Plant Type Flowering plant
Flavour Profile Not applicable
Life Annual
Germination Time 14–21 days
Fruit Size Not applicable
Soil Type Loose fertile well-drained soil
Soil pH 6.0–7.5
Spacing Between Plants 25–30 cm
Watering Needs Moderate
Harvest Time Not applicable
Bloom Season Spring to early summer
Seeds per Pack 24k
Seed Type Flower seed
Yield Potential Good flowering under cool conditions
GTIN 36002953983

"Sow seeds shallowly in trays or prepared beds.
Press gently into moist soil and cover lightly.
Keep soil cool and evenly moist.
Thin or transplant seedlings after true leaves appear.
Maintain spacing for healthy stem growth."

"Water regularly during active growth.
Provide support for tall flower spikes.
Remove faded flowers to support new growth.
Grow in airy spaces with good drainage.
Avoid heavy waterlogging around roots."

Question about this product?

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Frequently Asked Questions

Everything you need to know before you sow.

What makes Rocket Larkspur flower spikes distinctive?

Tall vertical spikes carry many colorful flowers, creating a strong upright accent in beds and borders.

Does delphinium need staking?

Yes. Tall flower spikes can benefit from stakes or support, especially in exposed or windy locations.

Can Rocket Larkspur grow in containers?
Large, deep containers can support it if the plants receive sufficient light, drainage, and stable support.

When should delphinium be deadheaded?

Remove spent flower spikes after the main display to tidy the plant and potentially encourage additional growth.

Does delphinium prefer cool weather?
It generally performs best in cool to moderate conditions and can struggle with prolonged intense heat.

Can mixed-color delphinium flowers vary between plants?

Yes. Mixed seed selections can produce a range of flower colors and shades.

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