Hardy garden mum (Chrysanthemum rubellum)
Care, watering, light and tips for Hardy garden mum on Floravia.
Quick facts
- Family: Asteraceae
- Difficulty: Easy to care for
- Watering: every 4 days
- Light: Full sun
- Temperature: 0–35 °C
- Toxicity: Toxic to pets
About Hardy garden mum
Chrysanthemum rubellum, also known as the Korean chrysanthemum, is a robust herbaceous perennial valued for its late and abundant flowering. Its blooms, ranging in color from pure white to deep pink and burgundy, create a vibrant autumn display when most other plants have finished their cycle. It is ideal for flower beds, borders, and as a container plant, adding a rustic and cheerful touch to the garden.
Native range
East Asia, specifically Korea, China, and Japan.
Care tips
It prefers full sun exposure for optimal flowering, although it tolerates some partial shade. Regular watering is needed, especially during dry periods, keeping the substrate moist but not waterlogged. The soil should be well-drained and fertile; a universal potting mix with some compost is suitable. A common mistake is not pinching back young shoots in early summer to encourage denser branching and a greater abundance of flowers.
How to save a dying Hardy garden mum
- Warning signs
- Yellowish or brown, wilted or soft leaves. Weak or drooping stems. No blooms or premature wilting flowers.
- First aid
- Check watering (moist but not soggy soil), light (morning sun, afternoon shade), and drainage. Prune spent blooms.
- What kills it
- Over or under-watering. Insufficient light or too harsh direct sun in summer. Poor drainage leading to root rot.
- Can it be saved?
- Yes, if roots aren't completely rotted and green stems remain. Act quickly with proper watering and light.