Description
Rocket larkspur is a fast-growing annual that adds height and drama to any garden. It is especially good for wildlife areas and cottage gardens, with its loose, blousy spires of blue, pink, purple, and white blooms.
It is a useful forage plant for bumblebees and acts as a host plant to several species of moth.
Benefits of Rocket Larkspur
- Attracts bumblebees
- Reseeds prolifically
- Adds height to garden beds
- Excellent cut flower
- Superior flower for dried arrangements
Tips for Growing Wild Delphinium
You can improve the germination of Wild Delphiniums by cold-stratifying the seeds in the refrigerator for 7 to 10 days. Rocket Larkspur prefers cooler temperatures, so is a good choice for early spring sowing.
Seeds can also be direct sown into the garden once soil temperatures reach 55. Cover well, as darkness stimulates germination.
You can also start your Rocket Larkspur seeds in large cell trays up to 8 weeks before your last frost date at a depth of ¼ inch. Cover with soil or starter mix. Water well and keep dark until seeds germinate. Seeds germinate best at temperatures above 55 degrees Fahrenheit.
Keep moist, but do not overwater to prevent seed rot. Once seeds germinate, provide light and keep cool until first true leaves appear.
In warm climates, Wild Delphinium seeds can be sown in late fall for early spring bloom. In frost-free regions, start indoors and plant out in late autumn for winter color.
If transplanting, plant into the garden as soon as possible. Handle fragile roots carefully to avoid damaging the plant’s deep taproot. Space approximately 4 to 6 inches apart.
Plant in sun or partial shade in good soil that offers plenty of organic matter. Rocket Larkspur can be heat sensitive, so consider a partially shady spot if your climate is hot.
Water plants in well and keep the soil moist until the plant is established. Afterward, water as needed. Fertilizer isn’t required if the soil is amended with compost when the flowers are planted.
Rocket Larkspur Details
- Life span: Annual
- Color scheme: Purple, blue, and pink flowers
- Height: 12-36” depending on soil fertility. May need staking in rich soils
- Time to Germinate: 14-21 days
- Time to Maturity: 10-12 weeks
Terms of Sale
Sold by weight — you will receive a minimum of 250 mg of seed, approximately 120 seeds, shipped free from Florida via regular USPS First Class Mail to U.S. mailing addresses only.
Refund/Replace/Return Policy
Our policy is to replace or refund any missing or damaged packages, so please contact us directly if you have any problems with your order.
We want happy gardeners and strive to provide a stress-free seed purchase.
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