Bloom Time: Mid Summer Late Summer/Early Fall Mid Fall
Other details: This plant is attractive to bees, butterflies and/or birds Average Water Needs; Water regularly; do not overwater Requires consistently moist soil; do not let dry out between waterings Self-sows freely; deadhead if you do not want volunteer seedlings next season
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: From seed; direct sow after last frost
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
On Mar 13, 2013, Cecilewis from Minneapolis, MN wrote:
Thinning the seedlings will result in floppy, spindly plants. Thick plantings aid in upright masses. At bloom time, you will have clouds of color. These flowers are one of my favorite for the dye pot. The more red the centers, the yellow color on cloth moves toward terracotta. They are a nuisance to pick for the dye pot as they are very small. When I strip the plants in the morning, they are full of open blooms by late afternoon. They look like I didn't even remove any flowers! I pick the flowers and keep them in paper bags, stirring the mass frequently so they don't clump and mold. When completely dry I keep them in zip-lock bags. If you are a dyer and want clear yellow on cloth, grow grandiflora - they are really easy to pick and don't have red eyes. Both are really beautiful on fiber. Protein fibers (silk and wool) are easier to color than cellulose (cotton, linen and rayon). Absolutely gorgeous on silk!
On Aug 6, 2007, thetripscaptain from Racine, WI (Zone 5a) wrote:
These grow fast from seed.
They are really spindly and don't need to be thinned out much, if at all. It seems that they support each other by growing close together. I thinned mine out to about 4" and now they are falling over.
The flowers are smaller than Coreopsis grandiflora, which is the perennial tickseed popular in garden stores, but I think C. tinctoria looks nicer.
Easily grown from seed, and definitely attractive to some pretty finches I've never seen in my yard before, so it's not a negative experience, exactly. But I based my siting on other PlantFiles notes, and no one mentioned how weedy the foliage looks, or how bushy they got. Mine have dwarfed the young lilac they were meant to circle, looked very scraggly until they came into bloom, and fell over badly in a hard rain. My plan is to wait for the seed heads to form well, then cut them down and shake them around in a spot where wilder-looking flowers will be attractive and welcome, and where their floppiness won't be an issue.
On Jun 22, 2004, cherishlife from Pocola, OK (Zone 7a) wrote:
I love this flower, it's so sunny and cheerful. It grows alongside the highways in great numbers in Arkansas and Oklahoma, and I'm sure in many other states as well. I've noticed the flower heads tend to follow the sun all day long.
It is very invasive however and I'm sure farmers everywhere hate it. I've seen farm fields full of this flower, very pretty but I doubt the cows like it for food.
On Mar 19, 2004, sunnyjennyb from Red Bluff, CA wrote:
I planted it from a nursery conatiner, it did wonderful but you are left with a gazillion flowers to deadhead or it looks rather unatractive. On the plus side as soon as you dead head it comes back with another great show.
On Nov 8, 2000, gardener_mick from Wentworth, SD (Zone 4a) wrote:
Plains coreopsis is an easy to grow plant. They grow 2-3' and need full sun and well-drained, moist to dry soil. They will bloom from summer to fall. The colors vary, but are usually a yellow or orange with a deep reddish-brown center. Plains coreopsis are great in mixed borders or wildflower gardens. They will reseed if allowed.
This plant has been said to grow in the following regions:
Auburn, Alabama Saraland, Alabama Chandler, Arizona Kachina Village, Arizona Mesa, Arizona Phoenix, Arizona Montrose, Arkansas Chowchilla, California Citrus Heights, California Menifee, California Red Bluff, California Richmond, California Santa Clara, California Vacaville, California Edgewater, Colorado Winsted, Connecticut Jacksonville, Florida Panama City, Florida Samoset, Florida Tampa, Florida Cordele, Georgia Villa Rica, Georgia Itasca, Illinois Jacksonville, Illinois St Charles, Illinois Anderson, Indiana Columbus, Indiana Dupont, Indiana Ankeny, Iowa Benton, Kentucky Ewing, Kentucky Halifax, Massachusetts Grand Haven, Michigan Minneapolis, Minnesota Maben, Mississippi Mathiston, Mississippi Waynesboro, Mississippi Kansas City, Missouri Blair, Nebraska Denville, New Jersey Alamogordo, New Mexico Elba, New York Troy, New York Elizabeth City, North Carolina Gorman, North Carolina Haviland, Ohio Oklahoma City, Oklahoma Pocola, Oklahoma Milwaukie, Oregon Penn Hills, Pennsylvania Pittsburgh, Pennsylvania Summerville, South Carolina Christiana, Tennessee Crossville, Tennessee Bulverde, Texas Dalworthington Gardens, Texas (2 reports) Doyle, Texas Fort Worth, Texas San Antonio, Texas Santa Fe, Texas Spring Branch, Texas Willis, Texas Henrico, Virginia Kalama, Washington Lakewood, Washington Millwood, Washington Rosalia, Washington Brookhaven, West Virginia Ellsworth, Wisconsin Madison, Wisconsin Wind Point, Wisconsin