Allium caesium

Plant type

perennial, bulb / corm / tuber

size

H: 12"-24"
W: 4"-8"

planting zones

4a-9b

More Options

Allium caesium plant details

Allium caesium is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In spring and summer blue flowers emerge. Features grassy texture. Attracts bees, beneficial insects and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and regular - low water. Drought tolerant once established. Prefers to be dry in summer. Does well in average, gritty, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Allium caesium

Plant type: perennial bulb / corm / tuber
Plant family: amaryllidaceae
Foliage: deciduous green
Mature size: 4 IN - 8 IN - wide, 12 IN - 24 IN - tall
Flowers: blue blooms in spring and summer
Uses: cutting garden, dried-arrangements, rock garden, unique

GROWING CONDITIONS for Allium caesium

USDA Zones: 4a - 9b
Sun exposure: sun - mostly sun
Watering frequency: regular - low
Resistant to: deer and rabbit, verticillium wilt
Soil needs: average, gritty, rich and well-drained

Nursery contributed plant descriptions

Allium caesium is a rare ornamental onion with large 4 inch wide spheres (double the size of the common A. caeruleum) with sky blue to milky royal blue spheres held on stems to about two feet tall. Few plants can offer the unique flower forms of ornamental onions. Every garden should have Alliums. Plant in multiples of 3, 5, 7 or more. Don't fret when foliage starts to die back just before flowering. It's normal. Just trim the leaves.

By: Phoenix Perennials and Specialty Plants Ltd.

Gardening facts about Allium caesium plant

How to Grow Allium caesium

Sun Exposure
- sun - mostly sun
Water Needs
- regular - drought tolerant
Water Needs
- dry in summer
Soil Needs
- average
- well-drained
- rich
- gritty
Special Situation
- verticillium wilt resistant

Features

Foliage Color
- green
Flower Color
- blue
Wildlife
- beneficial insects
- bees
- butterflies
- deer resistant
- rabbit resistant
Flower Season
- summer
- spring
Foliage Season
- deciduous
Texture
- grassy