How to Grow Large-flowered Tickseed
iNaturalist
Large-flowered Tickseed
Agalinis grandiflora
flowerA striking wildflower native to the southeastern United States, Agalinis grandiflora produces showy bright pink to purple flowers with yellow centers. This semi-parasitic perennial is a late-season bloomer that attracts pollinators and adds vibrant color to native plant gardens. It thrives in open, well-drained locations and is an excellent choice for naturalistic and prairie-style landscapes.
When should you plant Large-flowered Tickseed in your zone?
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Example Large-flowered Tickseed timeline · Pittsburgh, PA (Zone 6b)
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Plant Large-flowered Tickseed
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 Large-flowered Tickseed blooms
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Large-flowered Tickseed dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 7-10, with best performance in zones 8-9
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Get my Large-flowered Tickseed timeline →Growth Stages
Seed Stratification & Germination
Winter to early spring, 4-8 weeksSeeds require a cold period to break dormancy and germinate in spring after winter chilling.
Direct sow in fall for natural stratification, or cold stratify seeds indoors for 4-6 weeks before spring sowing. Keep soil lightly moist until germination.
Seedling & Rosette Formation
Spring to early summer, 6-10 weeksYoung plants develop a basal rosette of narrow, linear leaves close to the ground.
Thin seedlings to proper spacing. Provide consistent moisture but avoid waterlogging. This is a semi-parasitic stage; the plant may benefit from nearby host plants.
Vegetative Growth
Summer, 6-10 weeksStems elongate and branch as the plant develops a bushy form with increasingly visible linear foliage.
Reduce watering as plant establishes; encourage drought hardiness. Light deadheading of spent flowers can encourage more blooms.
Flowering
Late summer through fall, 8-12 weeks (August-October)Terminal spikes produce abundant showy magenta to pink flowers with bright yellow centers; flowers open in succession.
Deadhead spent flowers to extend bloom period. Ensure adequate sun. Minimal fertilizer needed; excess nitrogen reduces flowering.
Seed Set & Maturation
October-November, 4-6 weeksFlowers fade and small seed capsules develop. Plant gradually senesces as temperatures cool.
Leave some seed heads on the plant for self-seeding and wildlife food. Allow plant to dry naturally in fall.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use miticides if severe. Ensure adequate humidity during hot, dry spells.
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Hand-pick or use neem oil if population is high. Generally not a major problem.
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Ensure good air circulation; avoid overhead watering. Remove affected leaves. Apply fungicide if severe.
Uses
Ornamental for Floral Arrangements
CulinaryThe vibrant pink-purple flowers with golden centers make striking additions to fresh and dried flower arrangements, extending into fall when few wildflowers bloom. [source]
Pollinator & Insect Support
WildlifeFlowers attract late-season bees, butterflies, and other pollinators critical for fall feeding before winter dormancy. Seed heads provide food for birds and small mammals. [source]
Native Plant & Ecological Restoration
HouseholdValued for prairie restoration, native plant gardens, and meadow plantings that support regional ecosystems. Essential for maintaining biodiversity in southeastern landscapes. [source]
Traditional Ethnobotanical Use
MedicinalAgalinis species have been used traditionally in folk medicine, though modern scientific validation is limited. Research into semi-parasitic plant biochemistry is ongoing. [source]
Dried Flower Crafts
CraftThe sturdy stems and attractive dried flower heads retain color and form well, making them ideal for dried arrangements, pressed flowers, and botanical crafts. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For cut flowers, harvest in early morning when flowers are fully open. Stems hold well in arrangements (7-10 days). For seed collection, allow flower heads to dry on the plant in fall, then collect seed capsules before they shatter. Collect seeds in late October-November.
Fun Facts
- 🌱 Agalinis grandiflora is semi-parasitic, drawing some nutrients from nearby plants through root connections, making it an ecological specialist that thrives in specific native plant communities.
- 🌱 This wildflower is most abundant in late summer and fall, earning it a role as a critical late-season nectar source when many other plants have stopped flowering.
- 🌱 The genus Agalinis includes over 40 species and has experienced population declines in recent decades due to habitat loss, making cultivation and seed saving by gardeners valuable for conservation.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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