Aeonium undulatum
Sources last read 14 September 2026.
Not yet rated How forgiving it is has not been judged here yet.
Also called saucer-plant.
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
- Light
- Full sunRHS · 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.
H1C — 5–10°C 5–10 °CRHS · read 13 September 2026- Soil
- Loam, Sand; pH Acid or 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
- During growth, water generously and give a low nitrogen liquid feed every 2 or 3 weeks.RHS · read 13 September 2026
- Feeding
- While growing, water generously and give a low-nitrogen liquid feed at intervals of two or three weeks.RHS · read 13 September 2026
- Propagation
- In spring sow seed at 19-24°C, or take rosette cuttings and keep them at 18°C, barely moist, until they root.RHS · read 13 September 2026
- Pruning
- Pruning is not needed.RHS · read 13 September 2026
- Pests and diseases
- Can be troubled by mealybugs and aphids. Diseases: usually none.RHS · read 13 September 2026
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Photographs
About the plant
Aeonium undulatum is a succulent, evergreen flowering plant in the family Crassulaceae. It is a subshrub, one of the larger species of Aeonium with an 8–12 inches (200–300 mm) rosette of bright, glossy green leaves often over a metre from the ground on a single, unbranched stem. Other rosettes do not branch off this stem (normally) but grow from the bottom, unlike most aeoniums. The plant is monocarpic so the flowering stem will die after producing its yellow inflorescence, which is normally after about 5 years.
From Wikipedia, CC BY-SA 4.0 · read 13 September 2026
- Native range
- Canary Is. (NW. & N. Gran Canaria)World Checklist of Vascular Plants, June 2026 release, CC BY.Kew WCVP · read 13 September 2026Gran CanariaRHS · read 13 September 2026
- Climate
- subtropicalWorld Checklist of Vascular Plants, June 2026 release, CC BY.Kew WCVP · read 13 September 2026
- Growth form
- succulent subshrubWorld Checklist of Vascular Plants, June 2026 release, CC BY.Kew WCVP · read 13 September 2026Bushy (evergreen)RHS · read 13 September 2026
- Size
- Height 0.1-0.5 metres; spread 0.1-0.5 metres after 10–20 yearsRHS · read 13 September 2026
- Flowering
- Flowers yellow in springRHS · read 13 September 2026
Other Aeonium
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
Biting StonecropSourced care, difficulty not yet judged
Blue EcheveriaSourced care, difficulty not yet judged
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Sources
- ASPCA · read 13 September 2026
- Kew WCVP · 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.