Coreopsis grandiflora
A 1- to 2-foot-tall, drought- and heat-tolerant North American perennial with leafy stems and finely dissected leaves bears a few bright yellow flower heads on leafless stalks, self-seeds readily in sandy soils, blooms from late spring to late summer in full sun with well-drained soils, and attracts bees and butterflies.
Common Names
Tickseed, Large-Flowered Tickseed, Large Flower Tickseed, Largeflower Tickseed, Common Coreopsis, Coreopsis, Bigflower Coreopsis, Large-Flowered Coreopsis
Summary
Coreopsis grandiflora is a North American native perennial prized for bright yellow, daisy-like flowers about 2–3 inches across on slender stems above a mounded clump-forming habit, with deeply lobed leaves and ray petals often notched for a ragged sunlit look that attracts bees and butterflies. It typically grows about 1–2 feet tall and maintains a bright, continuous display through late spring to midsummer.
It thrives in full sun and well-drained soil, tolerating hot, dry conditions once established and hardy in USDA zones 4–9. The plant spreads by rhizomes and self-seeds readily, can be somewhat short‑lived, and may require division every few years; deadheading promotes longer blooming. Common uses include borders, rock gardens, swaths, prairies, and wildflower plantings, where its pollinator value and long season of color are particularly appreciated.
Lifecycle
Perennial
Height
12-24 inches
Spread
1-3 feet
Hardiness Zones
Zones 4-9
Sunlight Requirements
Ideally Full Sun, tolerates Partial Sun or Partial Shade
Soil Type
Well-drained soil
Soil Drainage
Well-drained soil
Soil pH
6.0-8.0
Bloom Color
Yellow
Bloom Time
Spring to Summer
Foliage Color
Green
Fall Foliage Color
Green
Leaf Lifecycle
Deciduous
Growth Rate
Vigorous growth
Seasons of Interest
Spring and Summer
Propagation Methods
Seeds, Division, Basal root cuttings
Attracts Wildlife
Bees, Butterflies, Other pollinators
Taxonomy
- Taxonomic Rank
- Species
- Author
- Hogg ex Sweet
- Publication
- Brit. Fl. Gard. 2: t. 175 (1826) (1826)
Superior Taxa
- Kingdom
- Plantae
- Subkingdom
- Pteridobiotina
- Phylum
- Angiosperms
- Order
- Asterales
- Family
- Asteraceae
- Subfamily
- Asteroideae
- Tribe
- Coreopsideae
- Genus
- Coreopsis
Synonyms
Coreopsis longipes Coreopsis grandiflora f. harveyana Coreopsis grandiflora f. grandiflora Coreopsis heterolepis Coreopsis grandiflora var. pilosa Coreopsis grandiflora var. subintegrifolia Coreopsis grandiflora var. longipes Coreopsis grandiflora var. grandiflora Coreopsis saxicola var. duncanii Coreopsis grandiflora var. harveyana Coreopsis grandiflora var. saxicola Coreopsis grandiflora f. pilosa Coreopsis harveyana Coreopsis boykiniana Coreopsis grandiflora f. longipes Coreopsis heterophylla Coreopsis grandiflora var. inclinata Coreopsis grandiflora f. demareei Coreopsis saxicola Coreopsis saxicola var. saxicola