PlantFun
Plant Needs
Sunlight
Prefers full sun in alpine or open rocky sites
Watering
Low water needs; tolerates drought once established
Temperature
Cold hardy to alpine frost; dislikes extreme heat
Characteristics
- Leaves: Basal leaves obovate to spatulate, with fine hairs, margins entire to slightly toothed;
- Flowers: Slender racemes, petals bright yellow, 4-petaled cruciform typical of Brassicaceae;
- Stem: Slender, erect, often reddish at base;
- Fruit: Small siliques containing minute seeds.
Care Guide
Watering
Water sparingly; keep soil barely moist
Fertilization
Light compost dressing in spring. Requires minimal feeding; excessive nutrients reduce hardiness
Crushed eggshell powder：Dry eggshells completely, crush finely; sprinkle lightly around plant base to add calcium and maintain soil structurePruning
- Remove spent flower stalks after seed set to maintain rosette vigor;
- Trim dead leaves in autumn;
- Avoid cutting basal rosette in growing season;
- Occasionally rejuvenate by division in early spring.
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: Non-toxic to cats (per ASPCA)
Humans: No known toxicity; edible in small amounts like other cresses
Garden Uses & Culture
Culture: N/A
Usage: - Rock gardens and alpine house collections; - Stabilizing soil in rock crevices.
