Scientific Name:
Astilbe
x
arendsii
cvs.
Pronunciation:
uh-STILL-bee ex ar-END-see-eye
Common Name:
hybrid astilbe, garden astilbe
Family Name:
Saxifragaceae
Plant Type:
Flowering cut plant, Herbaceous perennial
Key ID Features:
Leaves 2-3x compound, 20-75cm long; rachis dark red, swollen and conspicuously jointed at base and junction of petolies; leaflets ovate-oblong, most 7-9cm long x 3-5cm wide, margins serrate; panicles fluffy and pyramidal shaped, flowers small and numerous, 5-15mm wide, purple to white.
Habit:
Stiffly upright
Form:
Oval - vertical
Texture:
Medium
Mature Height:
0.4 - 0.7m
Mature Spread:
0.3 - 0.6m
Growth Rate:
Fast
Origin:
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun only if soil kept moist, Part sun/part shade, Filtered shade
Soil/Growing Medium:
Bog, Humus rich
Water Use:
Moderate
Landscape Uses:
Aquatic - ponds, Cut flower or foliage, Floristry, Group or mass planting, Perennial border, Rock garden, Spring interest, Summer interest, Waterside planting, Winter interest, Woodland margin
Additional Info:
Google (some cvs. are up to 1.3-2m tall). Cultivars shown or on campus may include A. 'Rock and Roll', A. 'Deep Pink', A. 'Rhythm and Blue', A. 'Snow Drift', A. 'Straussenfeder', and A. 'White Wings'.
Leaf Morphology:
Form:
Compound
Arrangement:
Alternate
Texture/Venation:
Soft flexible, Heavily veined, Pinnate venation
Surfaces:
Glabrous
Compound Leaf:
Trifoliate (ternate), Biternate
Colour in Summer:
Green, Dark-green, Bronze
Colour in Fall:
Yellow
Shapes:
Oblong, Ovate
Apices:
Acuminate, Acute, Aristate
Bases:
Attenuate, Cuneate, Oblique (uneven)
Margins:
Double serrate, Serrate
Inflorescence Type:
Panicle, Floriferous
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Perigynous
Colour (petals):
Showy, White, Purple, Pink, Red (peach)
Flower Time at Peak:
Jul, Aug
Additional Info:
panicles pyramidal, < 45cm long with florets < 5mm wide
Fruit Type:
Follicle, Aborted (hybrids) or absent
Fruit Colour:
Purple, Pink
Fruiting Time:
Sep, Oct
Additional Info:
Showy, Persistent, dried flowers are decorative thru winter
Bark or Stem Colour:
Green, Red
Organ Modifications:
Rhizomes, Stipule, leafy
Maintenance:
Low
Pest Susceptibility:
Bacterial leaf spot, Beetles or weevils, Mildew (Pest resistant, Disease resistant, Deer resistant, Rabbit resistant, Drought tolerant)
Course(s):
- CLT Training
- HORT 1155
- HORT 1193/1293
- Level 1 Apprenticeship
Location(s):
- (BCW) Boulevard (Circular) Westend : cv Burgunderrot ?
- (CGW) Community Garden West
- (HPZ) Horticulture PlaZa : cv. Rock and Roll
- (NRY) NuRserY : cvs. Rock and Roll, Deep Pink, & Rythm and Blue, White Wings (all hybrids?)
- (ONE) Overpass North side East
- (ONW) Overpass North side West : cv. Straussenfeder (Ostrich Plume)