Rocket larkspur (Delphinium ajacis)
Care, watering, light and tips for Rocket larkspur on Floravia.
Quick facts
- Family: Ranunculaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Rocket larkspur
Delphinium ajacis, commonly known as Rocket Larkspur or Annual Larkspur, is an annual plant from the Ranunculaceae family that produces stunning spikes of densely packed flowers in shades of blue, pink, white, and purple. Its upright, slender stems and finely divided foliage make it ideal for adding height and a cottage garden feel to borders, flowerbeds, and cutting gardens. It blooms profusely from late spring to mid-summer, attracting pollinators.
Native range
Mediterranean region
Care tips
For optimal growth, Delphinium ajacis requires full sun (at least 6 hours daily) and well-drained soil rich in organic matter. Keep the soil consistently moist, especially during dry spells, but avoid waterlogging as it is prone to root rot. A common mistake is planting it in partial shade or heavy, clayey soils, which can lead to leggy growth and poor flowering.
How to save a dying Rocket larkspur
- Warning signs
- Yellowing or wilting basal leaves, soft stems, sparse or no flowering, dry tips.
- First aid
- Check drainage and soil moisture. Ensure full sun and regular, but not excessive, watering. Remove damaged parts.
- What kills it
- Overwatering (root rot) and insufficient direct sunlight are the main killers for this plant.
- Can it be saved?
- Yes, if the roots are not completely rotted and growing conditions are quickly corrected.