Delphinium
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Delphinium

(del·​phin·​i·​um | \ del-ˈfi-nē-əm \)

Also Known As:

Larkspur, Staggerweed

When to Plant:
Spring
Blooms:
Summer and Fall
Light Requirements:
Full Sun to Partial Shade
Plant Height:
18-60"
Hardiness Zones:
Grow as Perennial in zones 3-7. Grow as Annual elsewhere. Find Your Zone
Planting Depth:
2-4"
Plant Spacing:
12-18"
Plant Type:
Bare Root

About

Delphinium VideoDelphiniums are most often found in cottage gardens. They come loaded with flowers! They create the perfect floral backdrop - tall and dignified - and bloom in rich shades ranging from rosy pink to blue and purple. Each tall spire is loaded with fluttery blooms, adding a vertical interest to your garden.

Delphiniums also provide shelter and food for native pollinators to thrive and survive.

 

Highlights

  • Excellent for bouquets and cut flower arrangements
  • Perfect addition to cottage gardens
  • Grows well in containers, garden beds and borders
  • Easy to grow; returns and blooms year after year
  • Beneficial to pollinators; attracts bees, butterflies and hummingbirds

Planting Care & Instructions

Plant Delphinium in the spring after all danger of frost has passed in a full sun to partially shaded location in moist but well draining soil.

Soil preparation: The ideal soil is porous and drains well and yet still holds enough water for the roots. If your soil is heavy clay and drains slowly, or very sandy and does not hold water, add organic soil amendments (peat moss or ground bark). Spread a 3-4" layer of soil amendment, add fertilizer and incorporate together into the soil to a depth of 10".

To plant: Dig a hole 2-4" deep in a partially sunny (at least 4 hours of direct sun), well drained location. Place the delphinium in hole with roots pointed down and space 12-18" apart. Cover with soil and water. Mulch in extreme climates.


Growing Tips

Taller delphinium plants will need to be staked.

Delphiniums dislike hot, dry summers and prefer a location that is consistently moist and cooler. Don't let them dry out. Mulching helps retain moisture.

Some gardeners recommend deadheading the first blooms. Remove flower stalks when blooms are spent.