Scientific Name:
Geranium robertianum
Pronunciation:
jur-AY-nee-um roh-bert-ee-AH-num
Common Name:
Robert geranium, herb Robert
Family Name:
Geraniaceae
Plant Type:
Annual (true), Biennial, Herbaceous perennial, Weed (horticultural)
Key ID Features:
Mounding herbaceous perennial; leaves basal, most trifolate, leaflets ovate, most 3-5cm long x 2-4cm wide, incised and deeply lobed and dentate; flowers ~1.5cm wide, 5 petals, light pink.
Habit:
Spreading, Upright
Form:
Mounded, Round
Texture:
Medium - fine
Mature Height:
0.1 - 0.2m
Mature Spread:
0.1 - 0.3m
Growth Rate:
Moderate
Origin:
Africa - northern, Central / west Asia, Europe, North America
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Part sun/part shade, Filtered shade
Soil/Growing Medium:
Rocky or gravelly or dry, Well-drained
Landscape Uses:
Attract beneficial insects, Herb
Additional Info:
Leaf Morphology:
Form:
Dissected, Compound
Arrangement:
Basal
Texture/Venation:
Soft flexible
Surfaces:
Pubescent, Distinctive smell
Compound Leaf:
Trifoliate (ternate)
Colour in Summer:
Green, Dark-green, Stems red
Shapes:
Ovate
Apices:
Acute
Bases:
Cuneate
Margins:
Dentate
Inflorescence Type:
Flowers solitary
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Superior
Colour (petals):
Pink, Magenta (Flower with white streaks)
Flower Scent:
Unpleasant
Flower Time at Peak:
May, Jun, Jul, Aug, Sep, Oct
Additional Info:
Sporadic blooms can continue into September and October
Fruit Type:
Schizocarp
Fruit Colour:
Red, Brown
Fruiting Time:
Jul, Aug, Sep, Oct, Nov
Additional Info:
Not showy, 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
Propagation:
Seed
Maintenance:
High
Other:
Remove plants before fruit ripens
Pest Susceptibility:
(Drought tolerant)
Course(s):
- HORT 1155
Location(s):
- (ONW) Overpass North side West
- (WDY) WeeDY location
- (WLG) WoodLand Garden