How to Grow Nubigenum Ice Plant
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Nubigenum Ice Plant
Delosperma nubigenum
succulentA low-growing, mat-forming succulent native to South Africa that produces vibrant yellow flowers in spring and summer. The fleshy, ice-plant foliage turns bronze or reddish in cold weather, providing year-round ornamental interest. This hardy groundcover is extremely drought-tolerant once established.
When should you plant Nubigenum Ice Plant in your zone?
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Example Nubigenum Ice Plant timeline · Pittsburgh, PA (Zone 6b)
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Plant Nubigenum Ice Plant
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Nubigenum Ice Plant
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Nubigenum Ice Plant dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9; exceptionally cold-hardy for a Delosperma species
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Establishment (Weeks 1-4)
4 weeksYoung transplants have small rosettes with minimal root development; foliage is bright green
Water lightly 2-3 times weekly until roots establish. Ensure excellent drainage. Protect from extreme heat initially.
Vegetative Growth (Months 2-4)
3 monthsRosettes expand and begin forming trailing stems; stems spread outward to cover ground space
Water moderately every 7-10 days during active growth. Remove any debris from foliage. Minimal fertilizer needed.
Pre-flowering (Late Winter to Spring)
4-6 weeksFoliage may deepen in color (bronze/red tones); flower buds begin forming at stem tips
Reduce water as temperatures cool. Allow natural dormancy period in fall/winter. No pruning needed unless removing dead growth.
Flowering (Spring to Early Summer)
8-12 weeksBright yellow, daisy-like flowers (0.5-0.75 inches) bloom profusely along trailing stems; typically May-July
Maintain minimal water. Do not deadhead unless spent flowers look untidy; they naturally drop. No fertilizing needed.
Summer Dormancy & Fall Color Change (July-November)
4-5 monthsFlowering tapers off in peak heat; foliage transitions to bronze, copper, or deep red tones in response to cold nights
Water very sparingly; mature plants may need water only during extreme drought. Color deepening is normal and desirable.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with horticultural oil or insecticidal soap; remove affected leaves; ensure good air circulation to prevent infestations
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Improve drainage immediately; reduce watering frequency; repot in fresh, well-draining soil if severe; ensure pots have drainage holes
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Mist foliage to increase humidity; spray with water or insecticidal soap; improve air circulation
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Remove by hand; treat with horticultural oil in early spring before growth resumes
Uses
Groundcover & Erosion Control
HouseholdIdeal for rock gardens, alpine troughs, green roofs, and steep slopes. Its spreading mat form prevents soil erosion while requiring minimal maintenance once established. [source]
Pollinator Support
WildlifeBright yellow flowers attract bees and other pollinators during spring and early summer, supporting garden biodiversity. [source]
Low-Maintenance Ornamental
HouseholdPrized for ornamental foliage that changes color seasonally (bronze/red in cold), providing year-round visual interest with minimal watering or fertilization. [source]
Container & Alpine Garden Display
HouseholdPerfect for shallow pots, troughs, and alpine gardens where well-draining soil is essential. Trailing habit spills attractively over pot edges. [source]
Traditional South African Medicine
MedicinalDelosperma species have been used in traditional herbalism for anti-inflammatory properties, though scientific evidence is limited. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Delosperma nubigenum is ornamental rather than harvested for food or material. Divide established mats in spring (every 3-4 years) by separating rooted sections and replanting. Take stem cuttings in spring/summer for propagation—allow to dry 24 hours before planting in well-draining soil.
Fun Facts
- 🌱 The common name 'Ice Plant' originates from the glistening, crystalline-looking epidermal cells on the foliage that resemble tiny ice crystals and help reflect intense sunlight.
- 🌱 Delosperma nubigenum is one of the hardiest Delosperma species and can survive temperatures down to -20°F (-29°C) with proper drainage, making it exceptional among tender succulents.
- 🌱 The foliage color transformation in winter (green to bronze/red) is a cold-hardiness adaptation that increases anthocyanin pigments, protecting cells from UV and cold damage while creating stunning garden displays.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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