Coreopsis profile

Coreopsis is a genus of annual and perennial herbs in the composite family. Most species are native to eastern North America. Coreopsis was first introduced by the British in Shandong Peninsula and is now growing in many parts of the country. Coreopsis is a member of the Compositae family. The main species are, Coreopsis, large-flowered Coreopsis, large-flowered Coreopsis, and ring-leaf Coreopsis. The Latin name for the little Coreopsis is Coreopsis tinctoria; The Latin name for large Coreopsis is C. Rosa.

Coreopsis picture

Coreopsis info

Botanical Name	Coreopsis spp.
Common Names	Coreopsis, tickseed, calliopsis
Plant Type	Perennial, annual
Sun	Full
Hardiness Zones	3–10 (USDA)
Flower color	Red, orange, yellow, pink, white
Native Area	North America, Central America, South America
Mature size	1.5–4 ft. tall and wide (varies by species)

Morphological characteristics of Coreopsis

Coreopsis is a perennial herb with persistent roots. The golden brown Coreopsis, which can reach a height of 3 feet (90 centimeters), is the most popular variety. Coreopsis leaves divide into narrow segments, like fern leaves, often opposite, rarely alternate, entire, lobed, or cleaved. The corolla is yellow or purplish red with a golden brown center. Flowers are solitary or sparsely panicle, involved in two rows, 3 in each row, base connate.1 row of ligulate flowers, broadly ligulate, yellow, brown, or pink. Tubular, yellow to brown flowers. Coreopsis flowers are about 3 inches (7.5 centimeters) wide, with yellow disks and dentate umbels that are yellow, white, pink, or purplish red. Flowers are in season from July to October and grow best in dry and sandy soil. Large Coreopsis (Tickseed) is a wild Coreopsis with pink umbellate corolla and leaves that resemble grass.

Ecological habits of Coreopsis

Coreopsis are cold and drought-tolerant, not strict with soil, light-loving, but semi-shade tolerant, adaptable, and resistant to sulfur dioxide.

How to grow and care for Coreopsis

Light

Coreopsis flora will develop and bloom high-quality in full sun, which means at least six hours of direct daylight on most days. They can additionally develop in partial sun, however the vegetation may be lankier and no longer flower as profusely. However, in climates with very warm summers, the vegetation regularly chooses some afternoon shade.

Soil

These vegetation thrive in well-draining loamy or sandy soil with a pretty impartial soil pH. However, most coreopsis types are very handy to develop and don't seem to be specific about soil best or soil pH, as lengthy as they don't seem to be waterlogged. Heavy, moist clay soils ought to be amended with compost to assist drainage.

Water

New coreopsis flowers want ordinary water to preserve the soil evenly moist (but no longer soggy) till they are established. After their first year, these plant life have top drought tolerance, however they may bloom most prolifically with everyday watering. Water deeply every time the soil is dry about an inch down. Early morning watering is best, so the leaves have a risk to dry for the duration of the day.

Temperature and humidity

Coreopsis vegetation likes heat temperatures between roughly 70 and eighty levels Fahrenheit all through the day and 50 to 60 tiers Fahrenheit at night. More than a few species have different ranges of bloodless tolerance. Humidity usually is not a difficulty for these vegetation as they have right air circulation and suitable watering and drainage.

Fertilizer

Fertilization usually isn't always crucial until you have very terrible soil. Too an awful lot of fertilizer can genuinely promote immoderate foliage increase and avoid flowering. To supply your flowers a boost, combine a little compost into the soil in the spring.

How to grow coreopsis from seed

Many coreopsis types can be grown from seed and regularly will reseed themselves in your garden. Start seeds indoors six to eight weeks earlier than your area's projected closing frost date, or at once plant seeds in your backyard after your ultimate frost. Plant the seeds roughly half of an inch deep, and preserve the soil gently, moist and warm. Seedlings ought to emerge in about two to three weeks. Put indoor seedlings by using a sunny window, and proceed to maintain the soil gently moist. Indoor seedlings will want to be slowly acclimatized to the outside by using taking them outdoors for longer stretches every day for about a week. Then, they’re prepared to be planted in the garden.

Coreopsis propagation

Coreopsis is a perennial herbaceous plant that is cold-tolerant and drought-tolerant. It is light tolerant, but semi-shade tolerant, adaptable, and resistant to sulfur dioxide.Coreopsis is easy to grow and can reproduce on its own. In production, sowing or division propagation is adopted, and cuttage propagation can be carried out in summer.  

Disease control in Coreopsis

The main diseases of Coreopsis are blight disease and brown spot disease. Prevention and control methods: one is to remove the sick leaves, pull out serious strains. Take it out of the field for destruction; The second is drug control, which can kill spray, every 5 ~ 7d once. Spray 3 times. Remove the nozzle of the sprayer with a solution of 1000 times 75% phoxim emulsion. In the evening spray insecticide on the base of the stem to control ground tiger. It is better to control other pests by using the insecticides such as quick-killer, dichlorvos and dichlorophenol.

Species taxonomy of Coreopsis

Coreopsis basalis 

The coreopsis plant height is 30 to 90 cm, the whole plant sparsely grows hairy, the whole plant margin is lobed, the stem leaves are long spatulate or lanceolate, the stem leaves are 3 to 5 lobed, the head inflorescence diameter is 6 to 7cm, long pedunculate, golden flowers.

C grandiflora

Whole plant slightly hairy, branched, basal leaves lanceolate, entire, upper leaves 3 to 5 deeply lobed.Inflorescences 4 -- 63cm, involucre subequal in inner and outer rows.8 lingulate flowers, yellow 1~2 long?5cm, terminal 3-lobed, tubular flowers also yellow.

C lanceolata

Glabrous or sparsely hairy, leaves many fascicled at base or few opposite, leaves few on stem, head flowers about 5 -- 6cm in diameter, outer involucre often shorter than inner, ligulate flowers 8 yellow, tip 2 -- 3 lobed.The tubular flowers are yellow .Leaves CoreopsisCoverticillata@ glabrous, less branched, impeller sessile palmately 3-lobed, lobes finely lobed, tubular flowers yellowish to yellow-green.

Coverticillata

Glabrous, little branching, impeller unborn sessile palmately 3 deep lobes, lobes and fine lobes, tubular flowers yellow to yellow-green.

Coreopsis region of distribution

Coreopsis is native to the southern United States. One of the early alien species, once in Henan and other parts of the small outbreak.

Coreopsis uses

Medical use

Coreopsis has little medicinal value, but it should not be ignored. It has a sweet, pungent, bitter taste, and is slightly cold. Coreopsis can enter the liver and lung meridian and help to disperse wind and heat.Also can be used at the eye red swelling pain caused by irasceration, wind heat, liver and kidney deficiency or myopia, night blindness, etc. Coreopsis also has the role of Qingrejiedu, can be used for boils swelling poison, the usual dosage is 10~15 grams, water decocted. But Qi deficiency stomach cold, food less diarrhea should be used with caution.

Coreopsis garden use

Coreopsis is native to the eastern part of the United States, cold, heat resistant, extensive growth, Jiangnan often flows for the wild ground. The double species need to propagate by division. The flowers are golden and gorgeous. The head is golden yellow. Flowering in summer and autumn.