Species larkspur Guide
blue-white flowers and light-green buds on dark-green stems

larkspur

Delphinium (Belladonna Group) 'Casablanca'

Cycle:

Herbaceous Perennial

Watering:

Average

Propagation:

Division,Stem Propagation,Seed Propagation,Layering Propagation

Hardiness Zone:

3 - 7

Flowers:

White Flowers

Sun:

Full sun

Leaf:

Yes

Leaf Color:

green

Growth Rate:

High

Maintenance:

High

Poisonous To Humans:

Yes

Poisonous To Pets:

Yes

Care Level:

Medium

watering

The larkspur (Delphinium (Belladonna Group) 'Casablanca') should be watered regularly, at least once a week. When watering, make sure to fully drench the soil until water begins to drain from the bottom of the pot. During the summer months, you may need to water more frequently to keep the soil moist. During winter, the plant needs less water, so only water when the top of the soil is dry. As a general rule, water in the morning or early evening when temperatures are cooler and evaporation is minimized.

sunlight

Larkspur (Delphinium (Belladonna Group) 'Casablanca') plants prefer a sunny location to thrive. They should receive at least 5 to 6 hours of full sun per day—preferably in the mornings, when it is less intense. When temperatures become too hot during the day, larkspurs need some dappled shade at midday to prevent wilting. Too much direct sun in warm afternoon temperatures can cause scorching of the foliage. As close to full sun as possible is ideal.

pruning

It is best to prune larkspur (Delphinium (Belladonna Group) 'Casablanca') in early spring or late winter before new growth begins. Carefully remove any winter-killed stems and then cut the plants back by a third to a half their height. This promotes branching, prevents floppy heads and eliminates weak, spindly stems. Deadheading the spent flowers throughout the summer will also help promote bushier plants with more flowers.