PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates dry, exposed growing conditions
Watering
Drought-tolerant; water only during extended dry spells to avoid root rot
Temperature
Tolerates cold winters and hot summers; hardy to USDA hardiness zones 3–9
Characteristics
- Leaf: Basal leaves are lobed, stem leaves are linear and clasping; gray-green foliage
- Flower: Small, four-petaled yellow blooms in terminal racemes
- Stem: Erect, branching, slightly hairy stems that break off at maturity to disperse seeds
Care Guide
Watering
Water sparingly only if top 5–7 cm of soil is completely dry
Fertilization
No regular fertilization required. Excess fertilizer can reduce flower production and self-seeding ability
Composted eggshell powder：Sprinkle a thin layer around the base of plants to boost soil calcium levels; avoid direct contact with stems to prevent tissue burnPruning
- Remove spent flower heads to reduce unwanted self-seeding if desired
- Thin overcrowded seedlings in early spring to improve airflow and reduce competition
- Cut back dead foliage in late autumn to tidy planting areas
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: No known toxicity to cats
Humans: No known toxic effects to humans
Garden Uses & Culture
Culture: N/A
Usage: Pollinator support for bees and butterflies; historical minor medicinal use for digestive ailments
