Delphinium plants feature tall stalks covered with blooms. If rabbits tend to munch on your garden plants, these are a great choice: rabbits typically avoid them.
Most Popular Colors: Blue, pink, purple, white.
Blooming Season: Early summer.
Soil Preferences: Choose rich soil with a leveled pH. Too much acidity will stunt the plants, but lime can be added to correct acid soil.
Climate Preferences: Delphiniums will blossom in any temperate climate.
Sun Exposure: Partial shade to full sun.
Landscaping Tips: Because delphinium typically grow taller rather than wider, use them as border plants or at the back of your flower beds.
Planting: Choose rich soil with a leveled pH. Too much acidity will stunt the plants, but lime can be added to correct acid soil. Space delphiniums 1 1/2 to 2 feet apart, and set the crown at or just above the soil level - the stems will rot if buried too deep.
Tall varieties may require staking to keep stalks from snapping.
Water well as the plants become established.
Cut back flower stems after the first bloom of the year to encourage later blooming.
Stalks can be cut down after the first frost of the year: aim to snip them to an inch or two above the ground.
These perennials also tend to be short lived. It may be necessary every 3-4 years to plant additional plants, or propagate from basal cuttings.