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Ceanothus thyrsiflorus

Common Name(s):
Blue Blossom, Blueblossom
Category:
Shrubs
Comment:

Blue blossom is an easy to grow broadleaf evergreen shrub in the buckthorn (Rhamnaceae) family.  It has truly blue flowers which all gardeners know can be incredibly difficult to find.  It can be used for screen and background plantings in large spaces and on slopes.  This shrub is very low maintenance, the evergreen leaves stay put and the blue flowers fall off individually, and are easily blown away by the slightest wind.

Seasons of Interest:

   Bloom: Spring, Mid may-Mid June

Play Value: Wind Screen & Buffers; Wildlife Enhancement 

Seed: Capsule 

Wildlife Value:  Flowers attract hummingbirds, honey and bumble bees.  The densly packed foliage provides excellent cover for songbirds.

Height:
4-12 ft.
Foliage:
Leaves are alternate, simple, deep glossy green, to 5 cm long, three prominent veins on the underside, tip obtuse to acute, margin sometimes gland-toothed.
Flower:
Thumb-sized flowers range from blue to white, in 7.5 cm spike-like clusters. Just before buds open they are pinky-lavender. Fruit about 3 mm, glandular-sticky, slightly lobed.
Zones:
7-9
Site:
Full sun to partial shade, may freeze with colder winters. Needs good soil drainage and does best in alkaline soil.
Texture:
Fine
Form:
Upright, rounded
Width:
5-6 ft.
Tags:
cover, playground, showy flowers, bees, play, nectar, hummingbirds, wildlife, honey bees, slopes, children’s garden, evergreen

NCCES plant id: 3195

Ceanothus thyrsiflorus Ceanothus thyrsiflorus
Hedwig Storch, CC-BY-SA-3.0
Ceanothus thyrsiflorus Ceanothus thyrsiflorus
A. Barra, CC-BY-SA-3.0
Ceanothus thyrsiflorus Flowers
A. Barra, CC-BY-SA-3.0
Ceanothus thyrsiflorus Close up of leaves showing margin detail.
Stan Shebs, CC-BY-SA-3.0