Scientific Name:
Spiraea thunbergii
Pronunciation:
spy-REE-uh THOON-burg-ee-eye
Common Name:
Thunberg spirea, baby's breath spirea
Family Name:
Rosaceae
Plant Type:
Shrub - deciduous
Key ID Features:
Leaves willow-like arrow, margins sparsely serrated, up to 5cm long x 5mm wide; florets about 1cm wide, 5 oval petals, white. Winter ID: twigs very fine, pubescent; buds alternate, ovoid, leaf scars crescent shaped.
Habit:
Arching, Dense
Form:
Vase
Texture:
Fine
Mature Height:
1.3 - 2.0m
Mature Spread:
1.5 - 2.0m
Growth Rate:
Moderate
Origin:
S.E. Asia / Japan / China
Hardiness Rating:
Zone 3: (-40 to -34 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Humus rich, Well-drained
Landscape Uses:
Hedge row, Mixed shrub border
Additional Info:
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Colour in Fall:
Yellow
Shapes:
Falcate, Lanceolate
Apices:
Acute
Bases:
Acute
Margins:
Serrate
Inflorescence Type:
Cyme, Corymb-like
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Superior
Colour (petals):
Showy, White
Flower Scent:
None
Flower Time at Peak:
Mar, Apr, May
Fruit Type:
Aggregate fruit, Follicle
Fruit Colour:
Brown
Fruiting Time:
Jun, Jul
Additional Info:
Not showy
Bark Morphology:
Exfoliating, Lightly fissured
Bark or Stem Colour:
Brown
Leaf Bud Type:
Ovoid
Leaf Scar Shape:
Crescent shaped
Propagation:
Greenwood cuttings
Pest Susceptibility:
(Pest resistant, Disease resistant, Deer resistant, Drought tolerant)
