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Aeonium

Aeonium arboreum & cultivars (e.g., 'Kiwi', 'Zwartkop')

Succulents & CactiEasy–ModerateModerate (in its cool growing season)🐾 pet-safe
Good to know: Canary Islands natives; 'Zwartkop' is nearly black and 'Kiwi' is cream-pink-green. Each rosette is monocarpic: it blooms once, spectacularly, then dies, leaving its branches to carry on.

Through the year 🗓️

☀️ Summer now

Summer dormancy: rosettes close and lower leaves drop; move it to light shade and water only enough to keep the stems from shriveling.

🍂 Fall

The wake-up: resume regular watering and feeding as rosettes reopen, and repot or take cuttings now.

❄️ Winter

Peak growing season: give it bright light, cool temps, and normal watering; protect from frost.

🌱 Spring

Still in active growth. Keep up water and monthly feeding, then start tapering as heat builds late in the season.

The details

Light & placement

Light
Bright light with gentle direct sun; appreciates light afternoon shade in hot climates
Ideal PPFD
300–600 µmol·m⁻²·s⁻¹
Grow-light distance
12–18 in below LED

Water & feed

Watering method
Soak-and-dry on a backwards calendar: water when the top inch dries during its fall–spring growing season, and only sparingly while it naps through summer.
Fertilizer
Balanced feed at ½ strength, monthly in fall–spring (its growing season); none in summer.

Home & habit

Soil
Well-draining succulent mix with a touch more organic matter than desert cacti like; pH 5.6–6.5
Humidity
Low–average (30–50%)
Temperature
55–75 °F; grows best cool, stalls above ~85 °F
Mature size
1–3 ft branched stems topped with rosettes
Repotting
Every 2–3 yrs in fall as growth resumes; shallow roots suit shallow pots
Propagation
Behead a rosette with a few inches of stem, callus 2–3 days, and pot up. The old stem often re-sprouts multiple heads.

When something looks wrong

Overwatering signs
Mushy stems, rosettes that flop off, rot at the soil line
Underwatering signs
Tightly closed rosettes, curling leaves, heavy lower-leaf drop
Common pests
Aphids, mealybugs, fungus gnats
Care notes: Aeoniums run opposite to every other succulent: they grow in cool weather and go dormant in summer heat, closing their rosettes and shedding leaves. Don't "rescue" a summer-dormant plant with water; that's when rot happens.

Common problems 🩺

The usual suspects when Aeonium looks unhappy. Most houseplant trouble is watering or light, not disease — see all plant problems if you are not sure which plant is the culprit.

Dropping lower leaves and closing up in summer

Likely cause
Summer dormancy. Aeoniums rest in the heat, the opposite of most succulents.

What to do
Water sparingly through summer and expect tight, shrunken rosettes. Growth resumes when it cools.

Long bare stems with a rosette on top

Likely cause
Low light — though some length is natural to the genus.

What to do
Brighter light with gentle direct sun. Behead and re-root a badly stretched rosette.

Mushy stem at soil level

Likely cause
Overwatering, especially during the summer rest.

What to do
Gritty mix, thorough but infrequent watering, and almost none while dormant.

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