Plant DetailShow Menu

Blueblossom Ceanothus thyrsiflorus

Other Common Name(s):

Phonetic Spelling
see-a-NO-thus thurs-i-FLO-rus
Description

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 

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

May freeze with colder winters

 

Cultivars / Varieties:
Tags:
#bees#hummingbirds#evergreen#showy flowers#wildlife plant#honey bees#nectar plant#cover plant#slopes#playground#children's garden#edible fruits
 
Cultivars / Varieties:
Tags:
#bees#hummingbirds#evergreen#showy flowers#wildlife plant#honey bees#nectar plant#cover plant#slopes#playground#children's garden#edible fruits
  • Attributes:
    Genus:
    Ceanothus
    Species:
    thyrsiflorus
    Family:
    Rhamnaceae
    Country Or Region Of Origin:
    SW. Oregon to Mexico
    Play Value:
    Attractive Flowers
    Attracts Pollinators
    Edible fruit
    Wildlife Food Source
    Dimensions:
    Height: 4 ft. 0 in. - 12 ft. 0 in.
    Width: 5 ft. 0 in. - 6 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Shrub
    Leaf Characteristics:
    Broadleaf Evergreen
    Habit/Form:
    Irregular
    Rounded
    Growth Rate:
    Rapid
    Texture:
    Fine
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil pH:
    Alkaline (>8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    Usda Plant Hardiness Zone:
    5b, 5a, 6b, 6a, 7a, 7b, 8b, 8a, 9b, 9a
  • Fruit:
    Fruit Color:
    Brown/Copper
    Purple/Lavender
    Fruit Value To Gardener:
    Edible
    Display/Harvest Time:
    Fall
    Fruit Type:
    Capsule
    Fruit Length:
    < 1 inch
    Fruit Description:
    Fruit about 3 mm, glandular-sticky, slightly lobed.
  • Flowers:
    Flower Color:
    Blue
    White
    Flower Bloom Time:
    Spring
    Flower Size:
    1-3 inches
    Flower Description:
    7.5 cm spike-like clusters. Just before buds open they are pinky-lavender. Fruit about 3 mm, glandular-sticky, slightly lobed.
  • Leaves:
    Leaf Characteristics:
    Broadleaf Evergreen
    Leaf Color:
    Green
    Leaf Feel:
    Glossy
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Description:
    three prominent veins on the underside, tip obtuse to acute, margin sometimes gland-toothed.
  • Bark:
    Surface/Attachment:
    Smooth
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Recreational Play Area
    Landscape Theme:
    Butterfly Garden
    Children's Garden
    Edible Garden
    Attracts:
    Butterflies
    Hummingbirds
    Small Mammals
    Songbirds