How to Grow Mesembryanthemum
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Mesembryanthemum
Mesembryanthemum crystallinum
flowerMesembryanthemum, commonly known as Ice Plant or Fig Marigold, is a succulent flowering plant native to South Africa characterized by glistening, crystal-like bladder cells on its leaves and stems. It produces vibrant daisy-like flowers in shades of pink, purple, yellow, or white and thrives in hot, dry conditions. The plant is prized for its ornamental value and drought tolerance, making it ideal for rock gardens, containers, and coastal landscapes.
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Example Mesembryanthemum timeline · Pittsburgh, PA (Zone 6b)
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Plant Mesembryanthemum
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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First Mesembryanthemum blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Mesembryanthemum dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Best in zones 9b-11; grown as annual or container plant in cooler zones
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Get my Mesembryanthemum timeline →Growth Stages
Seedling
2-3 weeksTiny succulent seedlings with initial smooth leaves, very delicate and prone to damping off
Keep soil lightly moist but never waterlogged; provide bright indirect light; ensure excellent air circulation to prevent fungal issues
Vegetative Growth
4-6 weeksPlant develops characteristic crystalline bladder cells on leaves and stems, creating distinctive glittering appearance; foliage spreads horizontally
Transition to full sun; reduce watering frequency; avoid overwatering which causes stem rot; allow soil to dry significantly between waterings
Pre-flowering
2-3 weeksPlant becomes denser and more compact; buds begin forming at stem tips
Continue full sun exposure; minimal supplemental watering; reduce nitrogen-heavy fertilizers to encourage blooming
Flowering
6-12 weeks depending on conditionsAbundant daisy-like flowers open, typically in morning and closing by afternoon, available in pink, purple, yellow, white, or bicolor combinations
Maintain dry conditions; deadhead spent flowers to encourage continued blooming; avoid wetting foliage which interferes with crystal cell display
Seed Set & Dormancy
4-8 weeksFlowers fade and seed capsules develop; plant may slow growth in heat or prepare for winter dormancy
Allow seeds to mature if desired; reduce watering to minimal levels; in cool climates, cut back plant and store cool and dry
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Isolate affected plants; spray with insecticidal soap or neem oil; remove with alcohol-soaked cotton swabs
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Increase humidity temporarily; spray with water; use insecticidal soap or miticide if severe
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Remove by hand; treat with horticultural oil or insecticidal soap
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Improve drainage; reduce watering; repot in dry soil if severe
Uses
Edible Ice Plant Leaves
CulinaryThe succulent leaves are edible with a slightly salty taste due to the crystal cells accumulating sodium and minerals. They can be used fresh in salads, as a garnish, or lightly cooked as a vegetable with a unique crunchy texture. [source]
Drought-Tolerant Landscaping
OrnamentalThe distinctive glistening appearance of the crystal cells makes this plant highly ornamental for xeriscaping, rock gardens, and container gardening. Pairs beautifully with other succulents and Mediterranean plants in water-wise gardens. [source]
Traditional Herbal Medicine
MedicinalUsed in traditional medicine systems, particularly in South Africa, for its potential anti-inflammatory and astringent properties. The leaves have been traditionally employed in folk remedies for digestive and skin applications. [source]
Cut Flower Arrangements
HouseholdThe vibrant, long-lasting flowers are excellent for fresh arrangements and dried arrangements, maintaining their color and form well. The crystalline foliage adds unique textural interest to floral designs. [source]
Pollinator Support
WildlifeThe daisy-like flowers attract bees, butterflies, and other pollinating insects, making it a valuable addition to pollinator-friendly gardens. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Enjoy flowers throughout blooming season by cutting stems for fresh arrangements in morning when flowers first open. Collect seeds after flowers dry on plant by placing seed heads in paper bag; allow to dry completely before extracting seeds. Cut back leggy plants in early spring to encourage bushier growth for next season.
Fun Facts
- 🌱 The distinctive crystal-like cells covering the leaves and stems are called 'bladder cells' or trichomes and serve as a water storage mechanism; they also reflect light, reducing water loss and UV damage in the harsh South African climate where the plant is native.
- 🌱 Mesembryanthemum flowers are heliotropic, opening and closing with sunlight—they typically open in morning and close by afternoon, a behavior called nyctinasty.
- 🌱 The plant is halophytic (salt-tolerant) and can thrive in saline soils, making it useful for coastal gardens and in regions with poor soil quality.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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