Scientific Name:
Spiraea nipponica
Pronunciation:
spy-REE-uh nih-PON-ih-kuh
Common Name:
snowmound spirea
Family Name:
Rosaceae
Plant Type:
Shrub - deciduous
Key ID Features:
Leaves alternate, most elliptic-obovate, 3-5cm long, margin serrate towards the rounded apex; flowers white in mass along branches, May-June.
Habit:
Arching, Spreading, Upright
Form:
Vase
Texture:
Medium - fine
Mature Height:
0.7 - 1.3m
Mature Spread:
1.0 - 1.5m
Growth Rate:
Fast
Origin:
Garden origin, S.E. Asia / Japan / China (Japan)
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Well-drained
Water Use:
Low
Landscape Uses:
Mixed shrub border, Spring interest
Additional Info:
Google. Compare to S. cantoniensis. Cultivars shown or on campus include S. 'Snowmound' (Award of Garden Merit, RHS), and S. 'Halward's Silver' (more dense and compact than cv. Snowmound).
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Colour in Summer:
Bluish, Dark-green
Colour in Fall:
Yellow
Shapes:
Obovate
Apices:
Rounded
Bases:
Attenuate
Margins:
Serrate
Inflorescence Type:
Cyme, Floriferous, 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:
May, Jun
Fruit Type:
Aggregate fruit, Follicle
Fruit Colour:
Green, Brown
Fruiting Time:
Jul, Aug
Additional Info:
Not showy, Persistent
Bark Morphology:
Exfoliating, Prominent lenticels
Bark or Stem Colour:
Brown
Propagation:
Seed, Cuttings
Other:
Remove older stems
Pest Susceptibility:
Aphids or adelgids (Pest resistant, Disease resistant)
Course(s):
- HORT 2355
Location(s):
- (BCW) Boulevard (Circular) Westend : cv. Halward's Silver? q.10 Auditorium entrance
- (BUG) BUG garden : cv. Halward's Silver
- (GAZ) GAZebo
- (GAZE) GAZebo East : cv. Snowmound - under catalpa
- (HPZ) Horticulture PlaZa
- (ONE) Overpass North side East : 484 - cv. Snowmound
- (TFL) Turf Field Lab
- (TFLE) Turf Field Lab East : not a cv.?