Impatient bittercress
Cardamine impatiens · Brassicaceae
The gardener's calendar
Ideal time to plant impatient bittercress: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- April to June
- Adult size
- 20 to 40 cm in height
- Growth
- Fast
- Hardiness
- Very hardy (down to -20°C)
- Origin
- Western and central Europe
- Soil type
- Moist soil, rich in organic matter
Care
Watering
Keep the soil constantly moist, especially during spring growth. Impatiens cardamine appreciates cool environments and tolerates prolonged dryness poorly. Water regularly during hot periods or if grown in a pot.
Light exposure
Place it in partial shade or dappled shade for optimal growth. It also tolerates direct sun in cool regions, but prefers areas protected from the hot afternoon sun. In woodlands or near a stream, it thrives naturally.
Soil
Prefer fertile, well-draining soil that retains moisture. Adding compost or enriched potting soil at planting encourages rooting. Impatiens cardamine appreciates slightly acidic to neutral soil, rich in organic matter.
Fertilizing
An application of well-decomposed compost in spring is generally sufficient. In poor soils, a balanced diluted fertilizer in spring can stimulate growth. Avoid excess nitrogen which would promote foliage at the expense of flowering.
Pruning
No strict pruning required. Trim back lightly after flowering to encourage compact growth and prevent excessive self-seeding if desired. The plant self-seeds readily under favorable conditions.
Diseases and pests
Generally unproblematic. Check for powdery mildew in overly dry or crowded conditions. Slugs may be interested in young foliage; simple preventive measures suffice. An airy environment with balanced moisture limits issues.
Did you know?
Impatiens cardamine owes its Latin name 'impatiens' to a spectacular characteristic: its seeds reach maturity in siliques (small pods) that burst at the slightest touch or vibration, propelling seeds several meters away. It's a fascinating seed dispersal mechanism that you can observe in late summer by gently touching the dried pods.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.