Common name: Tickseed
Family: Asteraceae, Aster
Height x width: 6-18" x 1-3'
Growth rate: moderate to fast
Foliage: entire, opposite or lobed
Flowers: yellow, daisy-like, 2 circles of bracts around flower heads, mostly summer
Hardiness: zones 3-5 to 7-9
Soil: well-drained
Light: full sun
Pests and problems: leaf spots, rusts, wilt, aphids, plant bugs, beetles
Landscape habit, uses: front of border, groundcover, underplanting
Other interest: seeds resemble small bugs hence genus name translated "like a bug" and common name, perennial and annual species, perennials once known as Leptosyne, native to southern and eastern U.S.
Other culture: deadhead for prolonged bloom
Propagation: division, some by seed or cuttings
Species:
auriculata (are-i-cue-laa' tah)--Mouse Ear Coreopsis, zones 4-9, 1-2' x 1', golden yellow flowers in spring, rounded leaves with 1-2 basal lobes, spreads somewhat
grandiflora (gran-di-floor' ah)--Tickseed, zones 4?-9, 1-2' x 1', yellow flowers in summer, may self-sow in zones 8-9
lanceolata (lan-cee-o-laa' tah)--Lanceleaf Coreopsis, zones 3-8, 1-2' x 2', yellow flowers in late spring, similar to grandiflora only leaves not as deeply cut
rosea (ro-zee' ah)--Pink Coreopsis, zones 4-7, 9-15" x 2-3', rose-pink flowers in summer, thread-like leaves, usually see var. nana in trade
verticillata (ver-tiss-ill-aa' tah)--Thread Leaf Coreopsis,
zones
4-9, 18"-3' x 3', yellow flowers in summer, long bloom time, drought
tolerant
since thread-like leaves, few flowers per inflorescence
Cultivars:
| Cultivars, other taxa | species | flowers | other |
| 'Baby Sun': 'Sonnenkind' | |||
| 'Early Sunrise' | grandiflora | bright yellow, semidouble AAS winner 1989 | |
| 'Golden Shower':'Grandiflora' | |||
| 'Goldfink' | -- | yellow, orange center | 2" flowers, 9" tall |
| 'Grandiflora' | verticillata | bright yellow | 18-24" tall |
| 'Moonbeam' | verticillata | neon yellow | summer, PPA 1992 |
| 'Nana' | auriculata | golden | best of species |
| 'Sonnenkind' | lanceolata | yellow-orange | compact 12-18" tall |
| 'Sunray' | -- | yellow, double | 2" flowers, long bloom |
| 'Tequila Sunrise' |
lanceolata
x grandiflora |
yellow-orange |
variegated leaves
olive/cream/yellow, 14-16" tall, 12-14" wide, zone 6? |
| 'Zagreb' | verticillata | deep yellow | 12-19" tall, tough |
©Authored by Dr. Leonard Perry, Professor, University of Vermont as part of PSS123 course.
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