Hylotelephium sieboldii
Sources last read 14 September 2026.
Not yet rated How forgiving it is has not been judged here yet.
Also called Japanese Stonecrop, October Daphne Stonecrop, October plant, October Stonecrop, Showy Stonecrop, Siebold's Sedum, Siebold's stonecrop and Stonecrop.
Toxicity is partly unassessed
- Not assessed for cats. This plant is not on the ASPCA list. That is not a finding of safety: none of the sources read for this site gives an answer either way. Treat it as unknown.
- Not assessed for dogs. This plant is not on the ASPCA list. That is not a finding of safety: none of the sources read for this site gives an answer either way. Treat it as unknown.
- Not assessed for people. RHS publishes no harm statement for this plant. That is not a finding of safety: none of the sources read for this site gives an answer either way. Treat it as unknown.
What the sources say about its care
Sources file this plant under other names: Sedum sieboldii 'Mediovariegatum'. Citations below point at the name its source uses.
- Light
- Full sun, Partial shadeRHS · read 13 September 2026
- Water
- Well-drainedRHS · read 13 September 2026
- Humidity
No source read publishes a humidity figure for any plant on this site. What follows is general guidance for foliage plants.
Most foliage plants prefer more humidity than a heated room gives; succulents are named as an exceptionPenn State Extension · read 13 September 2026- Temperature
How cold this tolerates, not what it prefers. No source read for this site publishes a preferred range for a plant indoors.
H4 — -10 to -5°C -10 to -5 °CRHS · read 13 September 2026- Soil
- Chalk, Loam, Sand; pH Alkaline or NeutralRHS · read 13 September 2026
- Toxic to cats
- Not on the ASPCA list. That is not a finding of safety.ASPCA · read 13 September 2026
- Toxic to dogs
- Not on the ASPCA list. That is not a finding of safety.ASPCA · read 13 September 2026
- Harmful to people
- No statement of harm to people is published for this plant; that absence is not evidence it is safe.RHS · read 13 September 2026
Routine care
- Watering
- In a container, let the soil dry out before watering.NC State Extension · read 13 September 2026During growth, water moderately and feed monthly with a liquid fertiliser at half strength. Give little water in winter.RHS · read 13 September 2026
- Feeding
- While growing, water moderately and give a liquid fertiliser at half strength each month.RHS · read 13 September 2026
- Repotting
- Move to a new pot in spring.NC State Extension · read 13 September 2026
- Propagation
- Japanese stonecrop can be propagated by division, seed or stem cuttings.NC State Extension · read 13 September 2026In early summer, root softwood cuttings from shoots that are not flowering.RHS · read 13 September 2026
- Pruning
- Can be shaped by pruning once flowering ends.RHS · read 13 September 2026
- Pests and diseases
- Can be troubled by slugs and snails. Diseases: southern blight.NC State Extension · read 13 September 2026Can be troubled by vine weevils, mealybugs, scale insects and aphids. Diseases: usually none.RHS · read 13 September 2026
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About the plant
Hylotelephium sieboldii, the October stonecrop, Siebold's stonecrop, Siebold's sedum or October daphne, is a species of flowering plant in the family Crassulaceae, native to Japan. Growing to 10 cm (4 in) high by 20 cm (8 in) wide, this trailing deciduous perennial produces its round glaucous leaves in whorls of 3 around the delicate stems. The hot-pink flowers appear in autumn (fall).
From Wikipedia, CC BY-SA 4.0 · read 13 September 2026
- Native range
- China (SW. Hubei), Japan (Honshu, Shikoku)World Checklist of Vascular Plants, June 2026 release, CC BY.Kew WCVP · read 13 September 2026JapanNC State Extension · read 13 September 2026
- Climate
- temperateWorld Checklist of Vascular Plants, June 2026 release, CC BY.Kew WCVP · read 13 September 2026
- Growth form
- semisucculent perennialWorld Checklist of Vascular Plants, June 2026 release, CC BY.Kew WCVP · read 13 September 2026Ground Cover, Perennial; habit arching, horizontal, moundingNC State Extension · read 13 September 2026Spreading branched (deciduous)RHS · read 13 September 2026
- Size
- Height 6–9 in; width 12–18 inNC State Extension · read 13 September 2026Height Up to 10 cm; spread 0.1-0.5 metres after 2–5 yearsRHS · read 13 September 2026
- Flowering
- Flowers pink; blooms in fallNC State Extension · read 13 September 2026Flowers pink in summer and autumnRHS · read 13 September 2026
- Uses
What sources record people using this plant for. A traditional or medicinal use listed here is a record of use, not advice to eat it or treat anything with it.
Planted in large groups it forms a good ground cover in temperate areas. Low toxicity if eaten; still, while young and tender, the leaves and stems are edible raw, and later, up to flowering, lightly cooked.NC State Extension · read 13 September 2026
More of the Crassulaceae family
Burro's tailLeaves soften and curl inward
Flaming KatyA thin dry rim that crumbles between the fingers
Jade plantPale dry areas across the upper leaves only
Mexican snowballPale dry areas across the upper leaves only
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Sources
- ASPCA · read 13 September 2026
- Kew WCVP · read 13 September 2026
- NC State Extension · read 13 September 2026
- Penn State Extension · read 13 September 2026
- RHS · read 13 September 2026
- Wikipedia · read 13 September 2026
What this does not cover
The figures above are what published sources say, not measurements of the plant in your room. They say nothing about your pot size, your water, the season, or how far from the glass the plant stands, and those decide more than any figure here does.
Humidity has no species figure because no source read for this site publishes one, and the only temperature published for this plant is a cold floor. The simulator fills those gaps with general figures for its kind of plant, marked as general and listed on how we read sources. Where a toxicity row says the plant was not assessed, that is the absence of a finding and not a finding of safety.
If something is already wrong, the diagnosis tool asks about the soil, the window and the watering, which is where the answer usually is.