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Coreopsis basalis is a bushy annual up to 60 cm (2 feet) tall with finely cut foliage and showy round flower heads. Plants with internodes 4–7(–10) cm long with both basal and cauline leaves. The foliage is produced on the bottom 3/4–7/8 of plants height.
The rest of Iowa now ranges from Zone 4b, with a temperature threshold of minus 25 degrees, to Zone 6a in the extreme southeast and southwest, with a minus 10 degree threshold. The addition of 6a ...
Germination takes between 7 and 21 days at the optimal temperature of 75 degrees Fahrenheit; flowering begins between 50 and 60 days after germination; It prefers a soil pH between 6.0 and 8.5, reflecting its native habitat in the alkaline regions of Central America; Flowering is best in full sun, although partial shade is tolerated
Coreopsis is best described as paraphyletic. Previously (1936), Coreopsis was classified into 11 sections and 114 species, but the African species were subsequently reclassified as Bidens , leaving the North and South American species, some 75–80 in all, under Coreopsis . 45 species are in the 11 North American sections, and the remaining 35 ...
Just as 68 degrees F is considered the best temperature for a house in winter, experts call 78 degrees F the magic number for the summer months. This interior temperature should be amenable to ...
Coreopsis tinctoria, commonly known as plains coreopsis, garden tickseed, golden tickseed, or calliopsis, is an annual forb. The species is common in Canada (from Quebec to British Columbia ), northeast Mexico ( Coahuila , Nuevo León , Tamaulipas ), and most of the United States , especially the Great Plains and Southern States .
Coreopsis latifolia, a rhizomatous perennial herb, grows up to 1.5 metres (4.9 ft) tall. The leaves are oval and may exceed 20 centimetres (7.9 in) long by 10 centimetres (3.9 in) wide. [5] The inflorescence is a corymb [3] of flower heads, each with five phyllaries which may be over a centimeter long.
Coreopsis auriculata is a perennial growing from 10 to 30 cm (4-12 in) tall and sometimes to 60 cm (24 in). Plants with rounded yellow flower heads bloom in spring and early summer. They are often stoloniferous , forming long spreading colonies by way of short stolons produced after flowering.