PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in open, rocky sites with minimal competition
Watering
Water deeply when the top 2 cm of soil is dry; drought tolerant once established
Temperature
Extremely cold hardy, withstanding temperatures down to -30°C; tolerates warm summer conditions up to 30°C
Characteristics
- Leaf: Basal rosette of hairy, oblong to spatulate leaves; stem leaves are smaller, clasping the stem
- Flower: Tiny white four-petaled blooms arranged in dense terminal racemes
- Stem: Erect, hairy stems that branch near the upper portion
Care Guide
Watering
Water regularly during active growth to support blooming; avoid waterlogging
Fertilization
Diluted balanced liquid feed once every 6 weeks. Avoid over-fertilization, as it can reduce flowering and promote leggy growth
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on the soil surface to boost calcium levels without risking root burnPruning
- Deadhead spent blooms promptly to encourage extended flowering and prevent excessive self-seeding
- Trim back faded foliage in late autumn to tidy the planting area
- Remove damaged or diseased stems at the base to maintain plant health
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: No documented toxicity to cats
Humans: No documented toxicity to humans
Garden Uses & Culture
Culture: N/A
Usage: Wildflower garden, rock garden, pollinator habitat support for bees and butterflies
