The threadleaf Coreopsis verticillata are increasingly popular. Coreopsis is not as sensitive to planting depth as other plants, since they readily root up the stem. Compact plants are less likely to sprawl than taller varieties of coreopsis. Not sure which Coreopsis to pick?Compare All Coreopsis, Buy Coreopsis grandiflora (Large Flower Tickseed), Great Plant Combination Ideas with Coreopsis. Only plants will be removed from the collection. Problems: No serious insect or disease problems. Cut back hard in summer if foliage sprawls or becomes unkempt. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas. Deadheading of spent flowers will keep the plant blooming. across (30-45 cm). The Sclerotium rolfsii fungus causes crown rot in coreopsis plantings. White fungal webbing forms around the base of the plant, and the leaves and blossoms turn brown as they wilt and die. SUMMARY . Cookies, This site is protected by reCAPTCHA and the Google, Coreopsis verticillata 'Moonbeam' (Threadleaf Coreopsis), Coreopsis rosea 'Sweet Dreams' (Pink Tickseed), Coreopsis grandiflora 'Early Sunrise' (Tickseed), Native Plant Alternatives to Lantana camara (Largeleaf Lantana), Native Plant Alternatives to Euphorbia cyparissias (Cypress Spurge), Want Garden Inspiration? Common problems with the coreopsis plant and troubleshooting. Create a membership account to save your garden designs and to view them on any device. Provide consistent fertilization for optimum flowering and growth. Fungicides at planting are usually not necessary. The blossoms are held high above the foliage on slender, erect stems clad with pinnatifid and deeply lobed bright green leaves. Grows up to 18-30 in. Ajuga reptans or Bugleweed has been selected here by Arthur... Use our interactive toolsto design your dream garden. Accept Mature plants may be increased by division in the spring or fall. White fungal growth webs at the base of the dying plant and become peppered with small, tan, round structures. Crown rot may occur in poorly drained soils. Tolerant of heat, humidity and drought, Large Flower Tickseed is a real workhorse in hot and often dry summer gardens. It is most likely to occur in a late winter thaw when dead leaves decompose on the ground and harbor bacteria and fungi which spread to healthy plants. Root rot can also be caused by the Rhizoctonia fungus, although sometimes Phymatotrichopsis is the cause.