Coreopsis grows like a weed.
In fact its wild cousin fills the fields and way-side ditches. The improved
garden variety also likes the sun and is easy to please. The original plant
has long lanky stems while the improved varieties are more compact.
The plant flowers for months from midsummer through fall. Golden yellow is the original color but their are some red varieties and pink varieties. It grows in clumps 30 inches tall, and has abundant daisy-like blooms 2-3 inches across. Some cultivated varieties are doubles, they have double the petals.
More good news is that coreopsis grows easily from seeds, Unfortunately,
the seeds from the plant sprout everywhere the next year. Because of their appearance, one of its common names is "tickseed".
Thread leaf coreopsis, also called moonbeam coreopsis, are smaller relatives with numerous thin leaves. and are bushier. Dwarf eared coreopsis is even smaller, only six inches tall.
Butterflies enjoy coreopsis as well.
Coreopsis grows in zones four through ten. It loves full sun, and it does well in poor or rich soils as long as it is well drained, particularly in winter months.
The plants should be set a foot apart. The clumps can be dug up and divided about every three years.
Coreopsis can fall prey to snails, slugs and fungal diseases but is generally problem free and very easy to grow.
Coreopsis will bloom longer if deadheaded. However the profusion of small blooms can make deadheading difficult. An easier solution is to simply wait until the first flush of bloom wanes and sheer the entire plant back.
Varieties of Coreopsis:
Golden Star
Mayfield Giant
Sunburst
Other Varieties:
C. grandiflora ‘Early Sunrise” - Large, semi-double bright yellow flowers starting in early summer (1-2' tall)
C. verticillata ‘Creme Brulee’ -
C. verticillata ‘Moonbeam’ - buttery yellow flowers, extremely airy. Short lived. (1½ - 2' tall)
C. verticillata ‘Zagreb’ - Golden yellow flowers, dependable (1' tall)
C. rosea ‘Nana’ - Mauve-pink, dwarf variety that spreads nicely (8" tall)
Scientific Name:
Coreopsis grandiflora: big flower
Coreopsis verticillata: thread leaf
Coreopsis auriculata nana: dwarf eared
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