Roadside bittercress
Cardamine debilis
Family: Brassicaceae or Cruciferae
What it is like
Cardamine debilis is a PERENNIAL growing to 0.3 m (1ft). The species is hermaphrodite (has both male and female organs). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
Height (m): 0.3
Where it is found
Damp places in lowland forest and scrub, North, South and Stewart Islands.
New Zealand.
Conservation Status:
Countries/locations it is found in
How it is used
Food
Rating: 2
Leaves - raw. Added to salads. A hot cress-like flavour.
Medicine
Rating: 0
Other
Rating:
How it is grown
We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it could succeed outdoors in many parts of this country. A polymorphic species. The following notes are based on the general needs of the genus. Prefers a moist humus rich soil in shade or semi-shade but succeeds in most soils that are not dry.
Propagating it: Seed - sow spring in a cold frame. Germination usually takes place within 1 - 3 weeks at 15°c. When large enough to handle, prick the seedlings out into individual pots and grow them on in light shade in a greenhouse or cold frame for the first two years, planting them out when dormant in late summer. Division in early spring or after the plant dies down in the summer. Larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.
Best place to grow: Woodland Garden Dappled Shade; Shady Edge; Bog Garden;
Habit: Perennial
Hardiness: 0-0
Growth:
Soil: Light (sandy), medium, heavy (clay)
Shade: Semi-shade, no shade
Moisture: Moist