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Native Wildflower · Easy

How to Grow Threadleaf Coreopsis

Coreopsis verticillata

Your complete guide to growing Threadleaf Coreopsis.

☀SunFull sun to part shade
💧WaterDrought tolerant
🗺Zones3–9
📏Height12-18 inches
Threadleaf Coreopsis📷 Wikimedia Commons

When to Plant Threadleaf Coreopsis

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 3 — May – July —
Zone 4 — April – June —
Zone 5 — April – June —
Zone 6 — April – June —
Zone 7 — March – May —
Zone 8 — March – May —
Zone 9 — February – April —

Companion Plants for Threadleaf Coreopsis

✓ Good companions

Aromatic Aster

Late season blooms extend pollinator resources when coreopsis finishes flowering

Black-eyed Susan

Complementary bloom times extend pollinator season, both thrive in similar soil conditions

Butterfly Weed

Attracts butterflies and beneficial insects, complementary orange and yellow color scheme

Lanceleaf Coreopsis

Creates pollinator corridors and extends blooming season with different peak times

Little Bluestem Grass

Provides structural support and contrasting texture while sharing drought tolerance

Prairie Dropseed

Native grass companion that provides wind protection and soil stabilization

Purple Coneflower

Similar growing conditions, attracts beneficial pollinators and creates habitat diversity

Wild Bergamot

Attracts beneficial insects and native bees, both prefer well-draining soil

✗ Keep away from

Crown Vetch

Aggressive spreader that can smother and outcompete native wildflowers for space

Tall Fescue

Aggressive root system competes for nutrients and can crowd out native wildflowers

Tree of Heaven

Produces allelopathic compounds that inhibit growth of native plants

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.