Scientific Name:
Epimedium
x
rubrum
Pronunciation:
ep-ih-MEE-dee-um ex ROO-brum
Common Name:
barrenwort
Family Name:
Berberidaceae
Plant Type:
Ground cover, Herbaceous perennial
Key ID Features:
Deciduous perennial with rhizomes, 20-30cm tall; Leaves basal, biternate, leaflets pinnately compound, pinnae ovate, most blades 5-9cm long x 3-5cm wide, base cordate, reddish in spring and fall, margin spinose, petiolules 2-6cm long x ~1mm wide; flowers with 4 pink to red sepals , and 4 white to pale yellow petals, some cvs. short-spurred, Apr.-May.
Habit:
Horizontal, Spreading
Form:
Oval - horizontal
Texture:
Medium - fine
Mature Height:
0.2 - 0.4m
Mature Spread:
0.3 - 0.6m
Growth Rate:
Slow
Origin:
Garden origin (E. alpinum x E. grandiflorum)
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Part sun/part shade, Filtered shade
Soil/Growing Medium:
Humus rich, Well-drained
Water Use:
Moderate, Low
Landscape Uses:
Ground cover, Rock garden, Woodland margin
Additional Info:
Leaf Morphology:
Form:
Compound
Arrangement:
Basal
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Compound Leaf:
Biternate
Colour in Summer:
Green, Red
Colour in Fall:
Red, Brown
Shapes:
Ovate
Apices:
Acute
Bases:
Sagittate
Margins:
Dentate, Spinose
Additional Info:
Spine-toothed leaflets
Inflorescence Type:
Thyrse, Panicle-like
Flower Morphology:
Flowers perfect
Number Of Petals:
4
Corolla Shape:
Cruciform
Ovary Position:
Superior
Colour (petals):
Showy, Yellow, Red
Flower Time at Peak:
Apr, May
Fruit Type:
Aborted (hybrids) or absent
Fruit Colour:
Fruiting Time:
Additional Info:
Not showy
Bark or Stem Colour:
n/a
Organ Modifications:
Rhizomes
Propagation:
Division - below ground parts
Maintenance:
Low
Pest Susceptibility:
Aphids or adelgids, Virus (Pest resistant, Disease resistant, Deer resistant, Rabbit resistant, Drought tolerant)
