Planting Methods and Care Tips for Large-flowered Coreopsis

Alternative Names for Large-flowered Coreopsis

Swordleaf Cosmos, Narrowleaf Coreopsis, Swordleaf Coreopsis, Large-flowered Cosmos

Morphological Characteristics of Large-flowered Coreopsis

A perennial herb, 20-100 cm tall. The stems are erect, often with sparse rough hairs on the lower part, and branched on the upper part. Leaves are opposite; the basal leaves have long petioles, lanceolate or spatulate; the lower leaves are pinnately parted, with oblong lobes; the middle and upper leaves are 3-5 deeply lobed, with linear or lanceolate lobes, the middle lobe being larger, and both surfaces and margins have fine hairs. The capitulum is solitary at the tip of the branches, 4-5 cm in diameter, with a long peduncle.

Growth Habits of Large-flowered Coreopsis

Large-flowered Coreopsis has no strict requirements for soil; it prefers fertile, moist, well-drained sandy loam, and can grow in soils with a pH value of 5~8 formed by the weathering of slate, granite, sandstone and limestone, especially growing best in soils with a pH value of 5~7 formed by granite weathering. It is drought-tolerant, cold-tolerant and heat-tolerant; the most suitable temperature is -6~35°C, and it can withstand extreme high temperatures of around 40°C and extreme low temperatures of -20°C. It has strong adaptability and is easy to propagate.

Main Values of Large-flowered Coreopsis

Ornamental value: Large-flowered Coreopsis is a perennial herbaceous plant that can bloom in the same year, with a flowering period of more than four months. The flowers are large and gorgeous; when in bloom they form a patch of golden yellow, and set off by the green leaves they stand out like a golden rooster, dazzling and eye-catching.

As an ornamental and beautifying material, Large-flowered Coreopsis is often used in the beautification design of flower borders, slopes, courtyards and street-center gardens; when the flowers are in full bloom, it is like a layer of golden soft satin spread out, splendid and eye-catching. Large-flowered Coreopsis can also be used as cut flowers or ground cover, and can also be used for highway greening; it has the effect of fixing soil and protecting slopes, and the cost is low.

Ecological value: Although Large-flowered Coreopsis is an invasive plant, people can turn it into a useful plant! Large-flowered Coreopsis can increase vegetation coverage, increase soil fertility, and also store water and conserve soil, making it a plant with very high ecological value.

The Symbolism of Large-flowered Coreopsis

Large-flowered Coreopsis carries meanings such as "forever" and "joy".