Baby sun rose
Also known as
Heartleaf ice plant, Trailing ice plant, Aptenia, Red apple aptenia
Keep this plant’s care guide close at hand.
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Mesembryanthemum cordifolium (widely known in horticulture as Aptenia cordifolia) is a fast-growing, mat-forming succulent in the Aizoaceae. It carries glossy, heart-shaped, fleshy leaves on succulent stems that readily root at the nodes, creating a dense, weed-suppressing groundcover or a cascading houseplant in hanging baskets. In bright sun, it produces a profusion of small, starry, magenta-pink, daisy-like blooms that open in midday warmth and attract pollinators. Typically 10–20 cm tall, it can spread 60–120 cm or more under favorable conditions. Native to coastal and riverine habitats of southeastern Africa, it thrives in sandy or rocky, sharply draining soils and exhibits notable drought tolerance once established. Its low, binding growth and tolerance of wind and salt spray make it useful for erosion control near coasts. Indoors, it appreciates a bright, sunny window and lean, gritty potting mixes. Regular, light pruning maintains a tidy form and encourages branching. Protect from prolonged frost and persistent wetness, which promote root rot.
Taxonomy
Properties & Requirements
How to care for Baby sun rose
Water
Follow a soak-and-dry approach. Water thoroughly until excess drains, then allow the mix to dry at least 2/3 of the way before watering again. In warm, bright conditions this often means every 7–14 days; in cooler or dimmer settings, extend intervals. Reduce to a light drink every 3–4 weeks in winter dormancy. Always prioritize drainage and avoid letting the pot sit in saucer water. Persistently wet soil is the most common cause of decline.
Light
Provide abundant light for compact growth and flowering: full sun outdoors (6–8+ hours) or very bright light indoors. In hot inland summers, offer light afternoon shade to prevent scorch; along coasts it thrives in full sun. Indoors, a south or west window with several hours of direct sun is ideal; supplement with grow lights if needed. Insufficient light leads to stretching and sparse blooms.
Nutrients
A light feeder, it performs best with modest nutrition during active growth (spring through early autumn). Use a balanced, low-nitrogen cactus/succulent formula at 1/4–1/2 strength every 4–8 weeks, or incorporate a slow-release, low-rate granule at season start. Avoid heavy, frequent feeding that drives soft, leggy growth. Do not fertilize in winter. Periodically flush the potting mix to prevent salt buildup, and favor organic top-dressings (e.g., worm castings) over high-nitrogen liquids.
Temperature
Best growth occurs between 18–27°C (65–80°F). It tolerates brief dips near 0–2°C (32–36°F) when dry but is frost-tender and suffers damage with sustained freezes; protect or overwinter indoors in regions colder than USDA 9b–10. Aim to keep indoor night temperatures above 10°C (50°F). Provide good air movement in humid climates to deter fungal issues, and avoid abrupt temperature swings after watering.
