Scientific Name:
Coreopsis grandiflora
Pronunciation:
core-ee-OP-sis gran-dih-FLORE-uh
Common Name:
large flowered coreopsis
Family Name:
Asteraceae
Plant Type:
Herbaceous perennial
Key ID Features:
Leaves opposite, most blades lanceolate to narrowly elliptical, 4-11(-15)cm long x 1-3(-5)cm wide, pubescent, margins entire or with 1-3 lobes; flower heads daisy-like, ray florets orange-yellow with slightly lobed tips, disk florets darker yellow.
Habit:
Upright
Form:
Mounded
Texture:
Medium - fine
Mature Height:
0.4 - 0.7m
Mature Spread:
0.6 - 1.0m
Growth Rate:
Fast
Origin:
U.S. - central
Hardiness Rating:
Zone 7: (-18 to -12 °C)
Exposure:
Full sun
Soil/Growing Medium:
Well-drained
Water Use:
Moderate
Landscape Uses:
Attract beneficial insects, Attract butterflies, Cut flower or foliage, Perennial border
Additional Info:
Google. Cultivars shown or on campus may include C. 'Sonnenkind' (larger fewer rays with dark red bases), C. 'Sunburst' (extra ray florets), C. 'Sunfire' (ray with dark red bases and tips more incised). Most cvs. have relatively few large ray florets (look-a-likes may include cultivars of Gaillardia aristata and G. x grandiflora).
Leaf Morphology:
Form:
Simple
Arrangement:
Opposite
Texture/Venation:
Soft flexible, Pinnate venation
Surfaces:
Pubescent
Colour in Fall:
Green
Shapes:
Lanceolate
Apices:
Acuminate
Bases:
Attenuate
Margins:
Ciliate, Entire, Pinnately lobed
Inflorescence Type:
Head (capitulum)
Flower Morphology:
Flowers perfect
Corolla Shape:
Ligulate
Ovary Position:
Inferior
Colour (petals):
Showy, Yellow
Flower Scent:
None
Flower Time at Peak:
Jun, Jul, Aug, Sep
Fruit Type:
Achene
Fruit Colour:
Brown
Fruiting Time:
Sep, Oct
Additional Info:
Fruit insignificant
Bark or Stem Colour:
Green
Propagation:
Seed, Division - below ground parts
Maintenance:
Low
Pest Susceptibility:
Fungal leaf spot, Rust, Slugs or snails (Pest resistant, Disease resistant, Deer resistant, Rabbit resistant, Drought tolerant)
Course(s):
- not used (on campus)
Location(s):
- (BUG) BUG garden : dead?
- (WDH) Wark-Dumais House