Largeflower Tickseed
Coreopsis grandiflora
- Native to:
- United States, Virgin Islands
iNaturalist: © red_team_fan (iNaturalist #47935213)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Coreopsis
- Species:
- Coreopsis grandiflora
- USDA Symbol:
- COGR5
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 76 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- yellow
Wildlife Benefits
- Bees:
- ★★☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Pollen Specialist Bee Keystone:
- ★★★☆☆ Native pollen specialist bee species supported by this genus (NWF)
Host Plant for Caterpillars
Dimorphic Gray (Tornos scolopacinarius)
Garden & Ecology Notes
- Wildlife Value:
- butterflies, bees
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Thrives in open, sunny areas with poor soil
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate readily after cold stratification; sow in fall or stratify for 4-6 weeks.
Pre-treatment: Single-step cold-moist stratification for temperate woodland species. for 60–120 days
Notes: Seeds germinate readily without pretreatment.
Source: Claude AI
ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.
Where to Buy
Nationwide Seller
- Ernst Seeds (seeds)
- Sheffield's Seed (seeds)
- Native American Seed (nursery and seeds)