Chrysanthemum weyrichii
Chrysanthemum weyrichii is a mat‑forming rock‑garden chrysanthemum with summer daisies. It stands out for very low growth and pale pink rays around yellow centers. It performs best in full sun and gritty, sharply drained soil. Plants spread by short stolons to make a low patch. Cold hardiness is excellent in northern gardens.
At‑a‑glance
- Group/Class: species chrysanthemum (rock garden type)
- Height × spread: 4–6 in (10–15 cm) × 12–20 in (30–50 cm)
- Bloom window: summer
- Color & flower form: pale pink single daisies with yellow centers
- Fragrance: 1 trace
- USDA hardiness: zones 3–7 (varies by selection)
- Breeder / Year / Origin: unknown
- Pet safety: avoid
How it differs
- Much lower, mat‑forming habit unlike most garden mums.
- Summer bloom rather than fall peak.
- Spreads by stolons to edge paths and rocks.
- Best suited to rock gardens and troughs.
Strengths
- Very cold tolerant in botanic garden trials.
- Good nectar source in summer.
- Clean foliage and compact habit that needs little staking or support.
Care in one minute
- Site in full sun with sandy or gritty, well‑drained soil.
- Water sparingly once established.
- Feed lightly in spring only.
- Deadhead to tidy and encourage continued bloom.
- Divide or replant rooted stolons to keep mats dense.
Watch‑outs
- Requires sharp drainage; losses occur in winter‑wet soils.
- May be susceptible to white rust in cool, wet spells.
- Can creep beyond tight spaces without edging.
Best uses (tags)
rock gardens, troughs, edging, pollinators
Provenance note
Native to Japan and Sakhalin; sometimes treated as allied to C. zawadskii in older literature.
Written by: Your Flowers Guide editorial team
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