Scientific Name:
Geranium himalayense
(incl. hybrid cvs.)
Pronunciation:
jur-AY-nee-um
Common Name:
blue hybrid cranesbill, Johnson's Blue geranium
Family Name:
Geraniaceae
Plant Type:
Herbaceous perennial
Key ID Features:
Leaves opposite, lobed to deeply incised, venation palmate; fruit absent on hybrids.
Habit:
Spreading
Form:
Irregular
Texture:
Medium - fine
Mature Height:
0.4 - 0.7m
Mature Spread:
0.3 - 0.6m
Growth Rate:
Moderate
Origin:
Garden origin (G. himalayense x G. pratense or G. wallichianum or ...)
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun only if soil kept moist, Part sun/part shade
Soil/Growing Medium:
Well-drained
Landscape Uses:
Attract beneficial insects, Attract butterflies, Perennial border
Additional Info:
Google. Cultivars shown or on campus may include G. 'Johnson's Blue' (G. himalayense x G. pratense), G. Plenum, and G. ‘Rozanne’ (G. wallichianum ‘Buxtons Variety’ x pollen of G. himalayense). Another popular blue flowering hybrid cultivars include G. 'Azure Rush', G. 'Eureka Blue', and G. 'Rozanne' (likely G. himalayense x G. wallichianum).
Leaf Morphology:
Form:
Simple, Lobed, Dissected
Arrangement:
Opposite
Texture/Venation:
Soft flexible, Palmate venation
Surfaces:
Glabrous
Shapes:
Reniform
Apices:
Acute
Bases:
Cordate
Margins:
Palmately lobed
Inflorescence Type:
Cyme
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Superior
Colour (petals):
Blue, Violet
Flower Time at Peak:
Jun, Jul, Aug
Fruit Type:
Schizocarp, Aborted (hybrids) or absent
Fruit Colour:
Brown
Fruiting Time:
Sep, Oct
Additional Info:
Fruit insignificant, Initially capsule-like, but splits into 5 mericarps which each open like a follicle to release a single seed
Bark or Stem Colour:
Green, Red
Organ Modifications:
Rhizomes
Propagation:
Greenwood cuttings, Division - below ground parts
Maintenance:
Low
Pest Susceptibility:
(Pest resistant, Disease resistant, Deer resistant, Rabbit resistant)
Course(s):
- not used (on campus)
Location(s):
- (BUG) BUG garden : cv. Plenum
- (GRB) GRass Bed : cv. Roxanne
- (ONE) Overpass North side East
- (PDE) PonD East
- (PDW) PonD West