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

Light

Most houseplants will scorch where sutherland's ice plant thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Needs full, unobstructed sun for best flowering — at least 6 hours of direct sunlight daily. Indoors, a south-facing windowsill is the preferred location. Lower light greatly reduces bloom output and leads to etiolation. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Sutherland's Ice Plant watering is mostly about restraint. When the top 3-4 cm of soil is completely dry, roughly every 7-14 days in growing season; reduce to monthly in winter — and never on a schedule. The finger test (or the pot-lift test) catches the actual moisture state; a calendar assumes weather and light don't change. Drought-tolerant once established. Water deeply and infrequently, allowing soil to dry out fully between sessions. In winter, water very sparingly. Always ensure pots have drainage holes to prevent waterlogging.

Soil and pot

Sutherland's Ice Plant grows best in sharply draining cactus or succulent mix with extra grit. Combine cactus compost with 40-50% coarse horticultural grit or perlite. This species, like all Delosperma, is intolerant of prolonged soil moisture. Neutral to slightly alkaline pH (6.5-7.5) is ideal. 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

Sutherland's Ice Plant sits happiest at around 20-40% humidity and 0-28°C (32-82°F). Thrives in low humidity environments typical of succulent plants. Average indoor humidity is fine; avoid consistently damp or humid rooms. If you keep the room above 0 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 sutherland's ice plant sparingly. Apply a dilute cactus fertiliser (quarter-strength) once a month during spring and summer. Withhold feeding entirely in autumn and winter. Avoid high-nitrogen formulas that encourage soft, disease-prone growth. 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 sutherland's ice plant in the Growli community. Each is annotated with the most common cause so you know where to start.

• Root rot in wet winters — Cold, wet soil in winter is the most common cause of plant death. Ensure excellent drainage, and in very wet climates consider a gravel mulch or moving containers under cover.
• Aphids on new growth — Soft spring growth may attract aphids. Remove by hand or apply insecticidal soap spray in the early morning away from strong direct sun.
• Etiolation in low light — Prolonged low-light conditions cause stretched, pale growth and poor flowering. Relocate to the sunniest available spot.
• Failure to rebloom — Can result from insufficient sun, no winter rest, or excess nitrogen. Ensure a dry, cool winter rest period to trigger spring bud formation.
• Frost heave of container roots — Outdoor containers may heave in hard frosts. In USDA zone 5 or below, overwinter containers in an unheated greenhouse or cold frame.

Companion plants

Sutherland's Ice Plant pairs well with Delosperma cooperi, Armeria maritima, Sempervivum arachnoideum, and Thymus praecox. 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 cuttings taken in late spring or early summer root reliably. Allow cut ends to dry for 24-48 hours before inserting into barely moist gritty compost. Division of established clumps in spring is also effective. 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

Sutherland's Ice Plant is pet-safe. Delosperma sutherlandii is not individually listed by the ASPCA. The genus Delosperma (Aizoaceae) is not a recognised toxic plant family and contains no known oxalates, bufadienolides, or alkaloids of concern, making it generally regarded as 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.

Sutherland's Ice Plant deep-dive guides

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

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

Featured in these plant shortlists

Sutherland'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 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 small & tabletop houseplants — Compact houseplants that stay under about 40 cm — desk, shelf and windowsill plants that never outgrow a small space.
• 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.
• Best small pet-safe plants — Compact, tabletop houseplants that are also ASPCA non-toxic to cats and dogs — safe greenery for a desk or shelf.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Sutherland's Ice Plant is also commonly called Sutherland's Delosperma or Hardy Pink Ice Plant.

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