Tickseed ~ Coreopsis Plant Care Guide and Varieties
Coreopsis
Prized for its dependable nature and colorful, daisylike flowers, coreopsis has a long bloom period and is generally troublefree and easy to grow. Another common name is tickseed.
About This Plant
Coreopsis is tolerant of a variety of soil types and environmental conditions, making it a popular choice for home gardeners. Tall varieties can reach 4 feet in height and are good for the back of the border and in cutting gardens. Shorter, mounding varieties are more delicate and good for edging. Most coreopsis sport yellow flowers, although a pink variety is also available.
Special Features
Easy care/low maintenance
Multiplies readily
Good for cut flowers
Tolerates dry soil
Site Selection
Select a site with full sun and well-drained soil.
Planting Instructions
Plant in spring, spacing plants 2 to 3 feet apart, depending on the variety. Prepare the garden bed by using a garden fork or tiller to loosen the soil to a depth of 12 to 15 inches, then mix in a 2- to 4-inch layer of compost. Dig a hole twice the diameter of the pot the plant is in. Carefully remove the plant from its container and place it in the hole so the top of the rootball is level with the soil surface. Carefully fill in around the rootball and firm the soil gently. Water thoroughly.
Care
Apply a thin layer of compost each spring, followed by a 2-inch layer of mulch to retain moisture and control weeds. Water plants during the summer if rainfall is less than 1 inch per week. Stake tall varieties to keep them upright. After the first killing frost, cut stems back to an inch or two above soil line. Divide plants every few years as new growth begins in the spring, lifting plants and dividing them into clumps.
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Coreopsis palmata
One classification of the genus into sections is:
- Coreopsis sect. Calliopsis
- Coreopsis sect. Coreopsis
- Coreopsis sect. Eublepharis
- Coreopsis sect. Gyrophyllum
- Coreopsis sect. Leptosyne
- Coreopsis sect. Pugiopappus
- Coreopsis sect. Silphidium
- Coreopsis sect. Tuckermannia[3]
Selected species
- Coreopsis auriculata L. – Lobed Tickseed
- Coreopsis basalis (A.Dietr.) S.F.Blake – Goldenmane Tickseed
- Coreopsis bigelovii (A.Gray) Voss – Bigelow’s Tickseed
- Coreopsis californica (Nutt.) H.Sharsm. – California Tickseed
- Coreopsis calliopsidea (DC.) A.Gray – Leafstem Tickseed
- Coreopsis cuneifolia Greenm.
- Coreopsis cyclocarpa S.F.Blake
- Coreopsis delphiniifolia Lam. – Larkspurleaf Tickseed
- Coreopsis douglasii (DC.) H.M.Hall – Douglas’s Tickseed
- Coreopsis floridana E.B.Sm. – Florida Tickseed
- Coreopsis gigantea (Kellogg) H.M.Hall – Giant Coreopsis
- Coreopsis gladiata Walter – Coastalplain Tickseed
- Coreopsis grandiflora Hogg ex Sweet – Large-flowered Tickseed
- Coreopsis hamiltonii (Elmer) H. Sharsm. – Mount Hamilton Tickseed
- Coreopsis integrifolia Poir. – Fringeleaf Tickseed
- Coreopsis intermedia Sherff – Goldenwave Tickseed
- Coreopsis lanceolata L. – Lance Coreopsis, Lance-leaf Tickseed
- Coreopsis latifolia Michx. – Broadleaf Tickseed
- Coreopsis leavenworthii Torr. & A.Gray – Leavenworth’s Tickseed
- Coreopsis linifolia Nutt. – Texas Tickseed
- Coreopsis major Walter – Greater Tickseed
- Coreopsis maritima (Nutt.) Hook.f. – Sea Dahlia
- Coreopsis mcvaughii D.J.Crawford
- Coreopsis mutica DC.
- Coreopsis nudata Nutt. – Georgia Tickseed
- Coreopsis nuecensis A.Heller – Crown Tickseed
- Coreopsis nuecensoides E.B.Sm. – Rio Grande Tickseed
- Coreopsis palmata Nutt. – Stiff Tickseed
- Coreopsis paludosa M.E.Jones
- Coreopsis petrophila A.Gray
- Coreopsis petrophiloides B.L.Rob. & Greenm.
- Coreopsis pubescens Elliott – Star Tickseed
- Coreopsis pulchra F.E.Boynton – Woodland Tickseed
- Coreopsis rosea Nutt. – Pink Tickseed
- Coreopsis rudis (Benth.) Hemsl.
- Coreopsis stillmanii (A.Gray) S.F.Blake – Stillman’s Tickseed
- Coreopsis tinctoria Nutt. – Plains Coreopsis
- Coreopsis tripteris L. – Tall Tickseed
- Coreopsis verticillata L. – Whorled Tickseed
- Coreopsis wrightii (A.Gray) H.M.Parker – Rock Tickseed[8][9]
Formerly placed here
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See Also ….
How to Care for Tickseed Flowers
Tickseed Guide @ Fine Gardening
How to Grow and Care for Tickseeds and other Coreopsis Plants
Auntie Dogma's Garden Spot 
I have this flower & it all turned brown how do I get it back to flowering?
June 19, 2015 at 5:36 pm
let me look at possible causes for you, be back soon
June 19, 2015 at 6:15 pm
sounds like stem rot but i have list here and symptoms of diseases that effect Tickseed, so you can better identify which disease
http://extension.psu.edu/pests/plant-diseases/all-fact-sheets/coreopsis-diseases
June 19, 2015 at 6:17 pm
Actually the stem is green. The flowers turned brown. Am I suppose to cut off the dead flowers?
June 21, 2015 at 11:19 pm
yes, remove dead flower heads and it should keep on blooming … add a pinch of epsom salt to your water and it will give it a boost
June 22, 2015 at 3:25 am
Thank you
June 22, 2015 at 3:37 pm
welcome 🙂 good luck. they are pretty hardy
June 22, 2015 at 6:28 pm
Can you help me identify a Tickseed that I have? I can send pictures. Thanks!!!
May 17, 2016 at 10:14 pm
sure 🙂
June 17, 2016 at 12:26 am