Disc House-leek Care (Aeonium glandulosum)

Aeonium glandulosum prefers bright outdoor conditions that balance sun exposure with protection from harsh midday rays.

• Provide 4–6 hours of direct morning sun with light shade or filtered light in the afternoon, especially in hot, dry climates.
• Plant Disc House-leek where it receives bright, open light all day but is shielded from strong sun between about 11 a.m. and 3 p.m. to prevent leaf scorch.
• In summer, increase shade in heatwaves; in winter, prioritize maximum sun exposure to reduce stretching and maintain compact rosettes.

Aeonium glandulosum needs careful, infrequent watering that allows the soil to dry slightly between soakings.

• Water only when the top 2–4 cm of soil feels completely dry, then water deeply so it drains freely from the root zone.
• Use sharply draining, gritty soil on a slope or raised area to prevent standing water, soft stems, and blackened, mushy roots from overwatering.
• In cool winter dormancy, reduce watering to light sips when leaves start to slightly wrinkle; increase frequency during active growth in mild spring–fall weather.

This species prefers mild, frost-free conditions with only moderate heat.

• Aim for 60–75°F (16–24°C) for best growth, with stable, cool to warm conditions rather than strong temperature swings.
• Protect plants from frost; brief dips to 32°F (0°C) may damage leaves and stems, and sustained exposure below 30°F (-1°C) can kill the rosettes.
• In hot spells above 85°F (29°C), provide afternoon shade and airflow; growth often slows in high heat, so reduce watering slightly to avoid rot.

This succulent handles a wide humidity range and rarely needs special humidity control.

• Prefers relatively dry air around 30–50% humidity, similar to most indoor heated homes.
• Tolerates occasional drier air if soil moisture is managed carefully and roots are not left wet.
• Disc House-leek shows humidity stress mainly as rot at the rosette center or blackened lower leaves when air is very still and damp.

Aeonium glandulosum needs a sharply draining, gritty mix that dries quickly after watering.

• Use a sandy, mineral-rich mix such as 50–60% cactus potting mix blended with coarse perlite or pumice for structure and drainage.
• Aim for slightly acidic to neutral pH, roughly 6.0–7.0, which most commercial cactus or succulent mixes already provide.
• Increase aeration by adding 5–10 mm grit or coarse sand so water moves through the root zone within seconds, not minutes.
• Avoid heavy peat-only mixes, fine compost, or regular garden soil that compacts, holds water, and encourages root or crown rot in Aeonium glandulosum.

This species is well suited to container growing when the pot supports fast drainage and shallow roots.

• Choose a wide, shallow container to match the plant’s disk-like rosette and shallow root system, which stabilizes it against wind or handling.
• Select unglazed terracotta if extra evaporation is needed in cool, cloudy climates where the potting mix dries slowly.
• Raise the container slightly on feet or spacers so the drainage holes never sit in a saucer of standing water after irrigation.

Aeonium glandulosum benefits from light, controlled feeding during active growth but is sensitive to excess nutrients.

• Use a dilute balanced liquid fertilizer (for example 10-10-10) at 1/4–1/2 strength for Disc House-leek in spring and early summer.
• Apply every 4–6 weeks only while the plant is actively growing and receiving strong light.
• Avoid feeding during summer dormancy or in winter, when growth is minimal.
• Flush the potting mix with plain water a few times per season to reduce salt buildup.

Aeonium glandulosum responds well to light, targeted pruning that keeps rosettes tidy and healthy.

• Best time for pruning is late winter to early spring, just before strong new growth starts.
• Remove dead, shriveled, or damaged rosettes and any soft, rotting stems with clean, sharp scissors or pruners.
• Thin out crowded side shoots to improve air flow and maintain a compact, attractive dome shape.
• Trim spent flower stalks at their base once they dry, which helps direct energy to younger rosettes.

Aeonium glandulosum is slow-growing and dislikes frequent disturbance, so repot or transplant only when clearly needed.

• Check for roots circling the pot, slow growth despite good care, or soil that dries within 1 day as signs to move up a size.
• Plan repotting or outdoor transplanting for late winter to early spring, before the main growth flush.
• Repot every 2–3 years at most, using a shallow, wide container with fast-draining succulent mix.
• Handle the root ball gently, lightly loosen outer roots, then water sparingly for 3–5 days to limit transplant shock.

Aeonium glandulosum is commonly propagated from stem cuttings and offsets, with seeds used less often.

• Take short stem cuttings or remove side rosettes with a bit of stem in late winter or spring.
• Allow cut surfaces to dry and callus for 2–5 days in a bright, airy place before planting.
• Insert cuttings into a gritty, just-moist succulent mix and keep at 65–75°F with bright, indirect light.
• For seed propagation, sow on the surface of well-draining mix, keep lightly moist, and provide warmth and consistent light for germination.

Aeonium glandulosum is not frost hardy and needs thoughtful winter management in cold climates.

• In regions below 30°F, grow in containers that can be moved indoors or into a cool, bright greenhouse.
• Maintain temperatures ideally above 40°F and provide as much light as possible near a south- or west-facing window.
• Water sparingly in winter, letting the mix dry well between waterings to prevent root rot in cool conditions.
• In mild coastal climates, use a light gravel mulch around the crown to improve drainage through winter rains.