Delphinium Belladonna (Larkspur) - 150 seeds

Plant information to grow annual delphinium (larkspur) from seed

Plant type: hardy annual flower
Height: flowers grow 100-120 centimeters tall
Position: full sun or partial sun
Planting time: start seeds in February-April and/or autumn
Bloom time: starts 100-120 days after sowing in late winter (February)
Spacing: 30 centimeters between each plant
Germination: 3-4 weeks, fluctuating temperatures promote germination
Pinching/pruning: optional for more bushy plants
Flowers: As early as June but depending on the weather and moment of sowing
Pollinator-friendly: yes
Recommended seed tray or pot: Start in medium-size deep module trays for the best seedlings
The package contains: 150 seeds

Tips to grow delphinium (larkspur) from seeds

Larkspur, or Delphinium, requires cold stratification to germinate. Sow seeds in autumn in a greenhouse or sheltered spot, or place them in the fridge or freezer for three weeks before sowing in seed trays. Avoid using a heat mat. Direct sowing is possible, but they dislike humid, rainy weather, so we prefer the fridge method followed by placing seed trays in a greenhouse or covered area.

Germination can be slow, so be patient. Our seeds are high-quality with a good germination rate. Sow two seeds per cell. Once seedlings outgrow their cells, transplant them into pots with high-quality compost and liquid feed if needed. Plant them out in spring with additional compost and support.

Cut back dead flowers to promote new growth. Larkspur is a great cut flower; harvest when one-third of the flowers have opened and remove most of the foliage. You can also dry the stems for dried flower arrangements.