Annual – Diamond Blue Larkspur
Diamond Blue Larkspur
Botanical name: delphinium grandiflorum
Beginner friendly?: moderate
Average size at maturity: up to 2 ft in height with a spread of up to 1 ft
Bloom time: re-blooms year round, but spring and summer are the seasons of interest
Hardy zone: zones 5-8
Flower color: blue, purple
Foliage color: green
Growth rate: reaches fully mature size in first growing season
Pruning instructions: deadhead spent blooms as needed
Propagation methods: propagate by seed sowing
Landscape use: flower gardens, container plant, borders, edging, rock garden
Special features: re-bloomer, can sometimes be grown as a herbaceous perennial
Light needs: at least 6 hours of sun per day
Watering instructions: allow the top 2 inches of soil to dry out between watering sessions
Fertilizing instructions : use a balanced, slow-release fertilizer after planting to promote more blooms
Best time to plant: spring
Best type of soil: sand or loam
Companion plants: catmint, hollyhock, joe pye weed, yarrow
Toxicity level: toxic for humans and pets if ingestedÂ
Invasive species: no
