How to Grow Shade Flowering Companions Collection
Wikimedia Commons
Shade Flowering Companions Collection
Astilbe spp., Dicentra spectabilis, Impatiens walleriana, Symphyotrichum novi-belgii
flowerA collection of four shade-loving flowering plants that complement each other beautifully in woodland gardens and shaded borders. These perennials and annuals offer varied heights, textures, and bloom times from spring through fall, creating dynamic layered displays. Together they create a succession of blooms and interesting foliage in difficult shade areas.
When should you plant Shade Flowering Companions Collection in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Shade Flowering Companions Collection timeline · Pittsburgh, PA (Zone 6b)
-
Plant Shade Flowering Companions Collection
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
First Shade Flowering Companions Collection blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Shade Flowering Companions Collection dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 4-8 for most; Impatiens zone 10+ or annual; adjust based on individual species
Sign up free to see if Shade Flowering Companions Collection grows in your zone — and get a personalized planting timeline.
Get my Shade Flowering Companions Collection timeline →Growth Stages
Seedling/Emergence
2-4 weeksTiny seedlings with first true leaves appearing. Plants are delicate and require high humidity and gentle watering.
Keep soil consistently moist but not waterlogged. Maintain 60-70°F temperature. Provide bottom heat for seeds if indoors. Avoid overhead watering to prevent damping off.
Vegetative Growth
4-8 weeksPlants develop full foliage and root systems. Astilbe and Bleeding heart establish their root crowns; Impatiens grows bushy; Shade asters develop basal rosettes.
Thin seedlings to appropriate spacing. Maintain consistently moist soil. Mulch heavily. Apply balanced fertilizer monthly. Pinch Impatiens tips to encourage bushiness.
Pre-flowering/Bud Formation
2-3 weeksFlower buds begin forming at branch tips or main stems. Plants focus energy on flower structure development.
Maintain consistent moisture and humidity. Apply low-nitrogen, higher-phosphorus fertilizer to encourage blooming. Ensure adequate dappled light. Do not allow plants to dry out.
Flowering
4-12 weeks depending on species and varietyFull bloom display with characteristic flower forms: Astilbe's feathery plumes, Bleeding heart's heart-shaped flowers, Impatiens' colorful blossoms, Shade asters' daisy-like clusters.
Deadhead spent flowers to encourage continuous blooming (especially Impatiens and Shade asters). Maintain soil moisture. Provide afternoon shade during heat waves. Weekly feeding extends bloom season.
Post-flowering/Decline
Varies by species; 2-4 weeks until frost for annualsFlowers fade and fade. Astilbe and Bleeding heart may go dormant; Impatiens may continue until frost; Shade asters transition to seed set.
Allow some flowers to set seed for self-sowing. Cut back perennials after frost. For Impatiens, remove plants before heavy freeze. Collect seed for next season if desired.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with strong water stream; insecticidal soap; neem oil; encourage beneficial insects
-
Increase humidity; spray leaves with water; insecticidal soap; miticide if severe
-
and
Hand-pick in early morning; copper barriers; beer traps; slug pellets; encourage ground beetles
-
Improve air circulation; avoid overhead watering; fungicide spray if severe; sulfur dust
-
Remove affected foliage; improve drainage and air circulation; avoid wetting foliage; fungicide spray
-
Yellow sticky traps; insecticidal soap; neem oil; reflective mulches
Uses
Edible flowers for garnish
CulinaryImpatiens flowers are edible with a slightly peppery taste and are used as colorful garnishes for salads and desserts. Other species in this collection are primarily ornamental, though some traditions use them in teas. [source]
Cut flowers and arrangements
HouseholdAll four species are excellent for cut flower arrangements and bring shade garden beauty indoors. Astilbe plumes dry beautifully for permanent arrangements. [source]
Traditional herbal uses
MedicinalBleeding heart has been used in traditional Asian medicine. Astilbe has mild astringent properties. These uses are historical and should be verified before consumption. [source]
Pollinator and hummingbird support
WildlifeImpatiens and Shade asters attract hummingbirds, bees, and beneficial insects. All four species provide nectar sources for shade-dwelling pollinators. [source]
Dried flower crafts
CraftAstilbe plumes and Shade aster flowers dry exceptionally well and are popular for dried flower arrangements, wreaths, and craft projects lasting many months. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Astilbe: Cut plumes in full bloom for fresh or dried arrangements; stems last 1-2 weeks fresh. Bleeding heart: Cut stems when flowers are fully open; lasts 5-7 days in vase. Impatiens: Pinch or cut stems for bouquets; plant continues to produce new flowers. Shade asters: Cut when flowers are fully open; deadhead spent blooms to extend flowering season. All species benefit from morning harvesting when stems are turgid.
Fun Facts
- 🌱 Astilbe's feathery plumes remain attractive even after flowering, providing textural interest through winter, earning them the nickname 'false spirea.' The name 'Astilbe' comes from Greek words meaning 'without shine,' referring to the flowers' matte appearance.
- 🌱 Bleeding heart gets its common name from the heart-shaped flowers with a protruding inner petal that resembles a drop of blood; Victorian gardeners considered them symbolic of deep romantic love and often planted them in memory gardens.
- 🌱 Impatiens have a unique seed dispersal mechanism where mature seed pods are under such tension that the slightest touch causes them to explode, flinging seeds up to 6 feet away—the genus name 'Impatiens' literally means 'impatient,' referring to this explosive seed release.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Shade Flowering Companions Collection planting timeline
Tell us your zip code and we'll calculate exactly when to start Shade Flowering Companions Collection seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Shade Flowering Companions Collection timeline →