Flowers

Galahad Larkspur

Delphinium 'Galahad'
Galahad Larkspur features bold spikes of white flowers rising above the foliage from early to mid summer. The flowers are excellent for cutting. Its deeply cut lobed leaves remain dark green in color throughout the season. Galahad Larkspur is an herbaceous perennial with a rigidly upright and towering form. Its relatively fine texture sets it apart from other garden plants with less refined foliage. This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter.
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Quick Facts

  • Vertical accent
  • Tolerant of urban pollution
  • Dark green foliage

Details

Galahad Larkspur features bold spikes of white flowers rising above the foliage from early to mid summer. The flowers are excellent for cutting. Its deeply cut lobed leaves remain dark green in color throughout the season. Galahad Larkspur is an herbaceous perennial with a rigidly upright and towering form. Its relatively fine texture sets it apart from other garden plants with less refined foliage. This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter.

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Variation:

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About This Plant

Type

Flowers

Leaf Color

Green

Flowering

Flowering

Mature Height

Up to 60 inches

Mature Width

Up to 48 inches

Features

Attracts bees, butterflies and hummingbirds

California residents please see Prop 65 WARNING

Seasonality

Leaf Lifespan

Deciduous

Leaf Time of Year

Spring, Summer, Fall

Life Cycle

Perennial

Bloom Time

Summer

Bloom Color

White

Plant Care Tips

Planting Instructions
If soil in container is dry, water plants prior to planting. Dig a hole at least twice the diameter of the root ball and 1.5 times deeper. Mix fertilizer or compost into the soil and return a few inches of soil mixture to the planting hole. Remove the plant from the container and gently tease out the roots on the surface of the root ball. Plant with the top of the root ball at ground level. Back-fill around the root ball with the rest of the soil mixture, gently firming it in as you go, and build a short berm of soil around the plant to create a watering basin. Water the plant thoroughly to settle the soil around the roots. Keep new plants well-watered the first summer, checking for water needs daily or every other day. Covering the root ball and area around the plant with 1-3 inches of mulch will help keep roots cool and conserve moisture. Keep mulch from touching tree trunks and plant stems.
General Care Description
Apply a fertilizer high in phosphorous each year in spring to encourage flower production. Removing spent flower stems at the base will encourage repeat blooming. Cut the entire plant down to the base in late fall.

Effort of Care

Moderate

Soil Type

Rich, well-drained soil

Growth Rate

Moderate

Light Needs

This plant will thrive if given space with full sun.

Water Needs

Overwatering or leaving roots soaked can lead to root rot or mold. Soil should be moist, not wet.

Disease and Pests

Root rots, powdery mildew

USDA Hardiness Zone

2

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SummerWinds - Galahad Larkspur