How to Grow Autumn Catchfly
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Autumn Catchfly
Silene schafta
flowerSilene schafta is a low-growing alpine perennial known for its vibrant magenta-pink flowers that bloom from mid-summer into autumn. This compact, spreading plant forms dense mats of foliage and is popular in rock gardens, alpine troughs, and border edgings. It's valued for its long blooming period and ability to thrive in well-drained, lean soil conditions.
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Example Autumn Catchfly timeline · Pittsburgh, PA (Zone 6b)
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Plant Autumn Catchfly
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 Autumn Catchfly blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Autumn Catchfly dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, preferring cooler climates with excellent drainage
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Get my Autumn Catchfly timeline →Growth Stages
Germination
10-14 daysTiny seedlings emerge with fine, thread-like cotyledons and true leaves beginning to form.
Keep soil lightly moist but never wet. Provide bright light and good air circulation to prevent damping-off. Avoid fungal issues by ensuring adequate ventilation.
Vegetative Growth
4-6 weeksPlant develops a dense, spreading mounding habit with narrow, linear, gray-green foliage forming low cushions.
Transplant to well-draining soil mix when seedlings have 2-3 true leaves. Gradually harden off before planting outdoors. Allow soil to dry between waterings.
Budding
2-3 weeksTerminal flower buds appear at the tips of shoots; plant maintains compact form while flower clusters develop.
Reduce nitrogen to avoid excessive foliage growth. Ensure full sun exposure for optimal flower production. Do not overwater.
Flowering
8-12 weeks (mid-summer to frost)Clusters of bright magenta-pink flowers open sequentially along the stems; blooms are delicate and long-lasting.
Deadhead spent flowers to encourage continuous blooming into autumn. Water during dry spells but keep soil on the dry side. Avoid overhead watering.
Senescence
4-6 weeks into winterFlowering slows as temperatures drop; foliage may take on bronze tones as the plant prepares for dormancy.
Allow seed heads to mature if desired for self-seeding. Do not provide supplemental water or heavy mulch; plant needs dry dormancy period.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove by hand, provide copper barriers, or use beer traps. Ensure good air circulation and avoid mulch accumulation around plants.
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Spray with strong water stream or use insecticidal soap. Avoid over-fertilizing which promotes tender growth susceptible to aphids.
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Increase humidity slightly, spray with neem oil or miticide. Generally not a major issue in cool climates.
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Improve drainage immediately, reduce watering, and avoid heavy mulch. Prevention is key; provide excellent drainage and air circulation.
Uses
Dried flower arrangements
CraftThe delicate flowers and fine stems dry well and retain color, making them suitable for dried arrangements, wreaths, and floral crafts. [source]
Pollinator nectar source
WildlifeThe magenta flowers attract bees, butterflies, and other beneficial insects, providing an important nectar source during late summer and autumn. [source]
Edible flower garnish
CulinaryThe petals are edible and can be used as delicate garnishes for salads and desserts, adding color and subtle flavor. [source]
Alpine and rock garden ornamentation
HouseholdIts compact, low-growing form makes it ideal for rock gardens, alpine troughs, scree gardens, and between paving stones where it creates colorful drifts. [source]
Harvest Tips
Not typically harvested for consumption. For seed collection, allow flower heads to dry on the plant in late autumn, then collect and store seeds in a cool, dry place. Self-seeds readily in suitable conditions if not deadheaded.
Fun Facts
- 🌱 Silene schafta is native to the Caucasus Mountains and naturally thrives in harsh alpine environments with poor, rocky soil, making it exceptionally tough and undemanding in the garden.
- 🌱 The common name 'Catchfly' refers to the sticky substance on the stems and sepals of some Silene species, which supposedly traps small insects; however, S. schafta is not notably sticky.
- 🌱 This plant is a prolific self-seeder and can naturalize beautifully in rock gardens and on scree slopes, often appearing in unexpected locations year after year.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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