How to Grow Cyclamen coum 'Nettleton Silver'
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Cyclamen coum 'Nettleton Silver'
Cyclamen coum 'Nettleton Silver'
flowerCyclamen coum 'Nettleton Silver' is a miniature flowering perennial with delicate pink or magenta nodding flowers and distinctive silvery-marbled foliage. This hardy alpine cyclamen blooms in late winter to early spring when few other plants flower, making it a valuable garden jewel. It forms low, compact clumps that spread via self-seeding.
When should you plant Cyclamen coum 'Nettleton Silver' in your zone?
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Example Cyclamen coum 'Nettleton Silver' timeline · Pittsburgh, PA (Zone 6b)
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Plant Cyclamen coum 'Nettleton Silver'
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 Cyclamen coum 'Nettleton Silver' blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9, with best performance in zones 6-8
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Get my Cyclamen coum 'Nettleton Silver' timeline →Growth Stages
Germination
8-12 weeksSeeds are slow to germinate, often taking 2-3 months of cool temperatures. First sign is a tiny pink root emerging from the seed coat.
Keep soil cool and consistently moist but not waterlogged. Bottom heat (55-60°F) and darkness aid germination. Provide good air circulation to prevent damping off.
Seedling & Tuber Development
4-6 monthsTiny leaves emerge, and a small tuber develops at the base. Growth is slow; plants remain miniature in first year.
Ensure excellent drainage and bright indirect light. Avoid fertilizing; provide only dilute feeding if needed. Allow light dormancy period in summer.
Foliage Development
3-4 months (fall-winter)Heart-shaped leaves with silver marbling emerge in fall; plants develop a compact rosette. Distinctive variegated patterns become more pronounced.
Maintain cool temperatures (50-60°F if possible). Water moderately; foliage prefers slightly drier conditions than other growth stages. Provide bright, indirect light.
Flowering
6-10 weeksDelicate nodding flowers in shades of pink or magenta appear on thin stems above the foliage, typically from January through March depending on zone.
Keep temperatures cool; flowering lasts longer in cool conditions. Reduce watering slightly; avoid wetting flowers. Deadhead spent flowers to encourage more blooms. Ensure good air circulation.
Dormancy
4-5 months (May-September)Foliage yellows and dies back completely by late spring/early summer. Tuber enters rest period underground.
Dry off watering almost completely. Move containers to a cool, dry location. Do not disturb the tuber. Light watering only if soil becomes completely desiccated. Dormancy prepares the plant for the next cycle.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove and destroy heavily infested plants; maintain good air circulation; avoid overhead watering; introduce predatory mites; insecticidal soap as last resort
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Increase humidity; spray with water; use neem oil or insecticidal soap; ensure good air circulation
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Prevent by ensuring excellent drainage and avoiding waterlogging; remove affected plants; sterilize soil before replanting
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and
Hand-pick; use copper tape or barriers; beer traps; remove debris that provides shelter
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Hand-pick adults; use beneficial nematodes for larvae; insecticidal soap; remove plant debris
Uses
Not edible
CulinaryCyclamen coum contains compounds that can cause stomach upset and is toxic if ingested. All parts of the plant should be considered inedible. [source]
Winter garden decoration
HouseholdThe delicate winter flowers and attractive silvery foliage make this cyclamen valuable for brightening winter gardens and container displays when most other plants are dormant. [source]
Cut flowers and arrangements
CraftThe elegant nodding flowers are excellent for small-scale winter floral arrangements and can be used in miniature vases or fairy gardens due to their diminutive size. [source]
Early season nectar source
WildlifeCyclamen coum provides valuable nectar and pollen for early-emerging bees and other pollinators during the late winter and early spring months when food sources are scarce. [source]
Rock garden and alpine landscape design
HouseholdThe compact size, winter interest, and preference for well-draining soil make 'Nettleton Silver' ideal for rock gardens, alpine troughs, and alpine house collections. [source]
Harvest Tips
This is an ornamental flower plant grown for its blooms and foliage, not harvested for crop. Deadhead spent flowers to extend the blooming period. Collect self-sown seeds in late spring if you wish to propagate new plants. Allow some seeds to remain if you want natural self-seeding in the garden.
Fun Facts
- 🌱 'Nettleton Silver' is named for its exceptionally pronounced silvery variegation on the heart-shaped leaves, which often covers much of the leaf surface, making the foliage nearly as ornamental as the flowers.
- 🌱 Cyclamen coum is native to the Mediterranean basin and Turkey, where it grows in rocky woodlands and limestone areas—knowledge that guides its preference for cool, well-drained conditions.
- 🌱 The nodding flowers reflex backward as they mature, an adaptation that protects pollen and seeds from rain—the plant is sometimes called the 'sowbread' because pigs were historically attracted to the nutritious tubers.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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