Lehmann's Ice Plant (Lehmann's Delosperma) care

Light

Lehmann's Ice Plant needs sun on the leaves, not just bright ambient room light. Requires full sun for compact growth and reliable flowering. Place in the sunniest available spot indoors. Inadequate light promotes leggy stems and significantly reduces bloom. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water lehmann's ice plant when soil is completely dry, roughly every 10-14 days in spring-summer; very sparingly in winter (once every 3-4 weeks). Succulent-style plants store water in stem and leaf tissue — they'd rather be slightly thirsty than slightly soggy, and the most common way to kill one is to water it on a fixed weekly calendar instead of by feel. Classic succulent watering: soak thoroughly, then allow complete drying between cycles. In winter, the plant approaches dormancy and requires very little moisture. Always use pots with drainage holes.

Soil and pot

Lehmann's Ice Plant grows best in fast-draining cactus or succulent compost. Blend cactus compost with 40% coarse grit or perlite. Excellent drainage is non-negotiable for this species, which is prone to rot in wet soils. Slightly alkaline pH of 6.5-7.5 suits it well. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Lehmann's Ice Plant sits happiest at around 20-40% humidity and 5-30°C (41-86°F). Adapted to dry, arid conditions. Standard low-humidity indoor environments are suitable. Avoid steamy or humid rooms. If you keep the room above 5 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed lehmann's ice plant sparingly. Feed monthly in spring and summer with a diluted low-nitrogen cactus fertiliser (quarter-strength). Avoid feeding in autumn and winter. Excessive nitrogen encourages lush but weak, rot-prone foliage. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on lehmann's ice plant in the Growli community. Each is annotated with the most common cause so you know where to start.

• Root rot — Prolonged wet soil causes rapid root and stem rot. Ensure excellent drainage and allow full soil drying between waterings.
• Spider mites — In dry indoor conditions, spider mites may colonise. Increase air circulation and treat with insecticidal soap if an infestation develops.
• Leggy growth — Insufficient light leads to elongated, weak stems. Provide maximum available direct sunlight; trim back leggy growth in spring.
• Pale or yellowing leaves — May indicate overwatering or, in bright conditions, a sign of nutrient deficiency. Adjust watering and apply a dilute feed in the growing season.
• No flowers — Typically caused by insufficient sunlight or no winter rest period. A cooler, drier winter encourages spring flowering.

Companion plants

Lehmann's Ice Plant pairs well with Delosperma nubigenum, Portulaca grandiflora, Sedum acre, and Thymus serpyllum. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Stem tip cuttings taken in spring or summer root easily. Allow cut ends to callous for 24-48 hours, then insert into gritty cactus mix. Keep warm and bright but not in direct sun until established. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Lehmann's Ice Plant is pet-safe. Delosperma lehmannii is not individually listed by the ASPCA. The genus Delosperma belongs to Aizoaceae, which has no recognised toxic-plant signals such as calcium oxalates, bufadienolides, or saponins, and is generally considered non-toxic to cats and dogs. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Lehmann's Ice Plant deep-dive guides

Every aspect of lehmann's ice plant care, each with its own calibrated guide:

• Common lehmann's ice plant problems & fixes
• Lehmann's Ice Plant watering schedule
• Lehmann's Ice Plant light requirements
• Best soil mix for lehmann's ice plant
• Lehmann's Ice Plant fertilizing guide
• When to repot lehmann's ice plant
• How to propagate lehmann's ice plant
• How to prune lehmann's ice plant
• What's eating my lehmann's ice plant?
• Lehmann's Ice Plant growth rate & size
• Lehmann's Ice Plant cold hardiness
• Lehmann's Ice Plant temperature & humidity
• Is lehmann's ice plant toxic to cats & dogs?
• Is lehmann's ice plant toxic to cats?
• Is lehmann's ice plant toxic to dogs?
• All 15 Delosperma varieties

Featured in these plant shortlists

Lehmann's Ice Plant qualifies for 12 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• Best pet-safe trailing & hanging plants — Trailing and climbing plants the ASPCA lists as non-toxic to cats and dogs — safe for shelves and hanging pots in a pet home.
• Best pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
• Best succulents for beginners — The easiest succulents and cacti to keep alive — selected by documented growth habit, each with the light and watering it actually wants.
• Best pet-safe succulents — Succulents the ASPCA lists as non-toxic to cats and dogs — low-water greenery that is also safe around a curious pet.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Best cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Lehmann's Ice Plant is also commonly called Lehmann's Delosperma or Trailing Ice Plant.

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