You’d think a flower with a common name that relates to a little bug wouldn’t be that attractive, but coreopsis, also known as tickseed, is a lovely flower for your garden.
Coreopsis is a natural flower that can be found all throughout the United States. It features small golden, daily-like blooms in the wild, evoking its aster ancestors. However, modern breeding has broadened the spectrum of blossom colors and elevated the beauty of this ubiquitous wildflower. On 20-inch tall bushes, ‘Early Sunrise’ has double yellow flowers. On 10-inch tall plants, ‘Desert Sunrise’ has coral and peach colored flowers. Another short variation with white and raspberry-colored flowers is ‘Sweet Dreams.’ ‘Moonbeam’ is a classic with pale yellow flowers and neatly cut foliage. You get my drift. Plant size and bloom color can be customized to match any flower you’re growing nearby. However, some of these unusually colored varieties aren’t as hardy as the species sorts, and they’re only there for a brief time. They do self-sow, but the hybrids are unlikely to come true to seed.
Not only are coreopsis showy, but they’re also deer resistant, a butterfly favorite, a good cut flower, and goldfinches love the “tick” shaped seeds on the wasted flower heads. Full light, high temperatures, and well-drained soil are essential for growing coreopsis. Coreopsis can be planted near the front of a sunny flower border, along a south-facing wall, or in a container. Gaillardia and echinacea go nicely together in the taller varieties. Thread-leaf varieties, with their airy foliage, complement salvias and liatris. After they’ve finished flowering, trim the plant back by a third to encourage new growth and additional blossoms.
How do you plant tickseed plants?
Learning how to grow coreopsis is also simple. Simply seed a prepared area of unamended soil in full sun in the spring. To ensure that coreopsis seeds sprout, lightly cover them with soil or perlite, or just press them into damp soil. Keep coreopsis seeds moist until they germinate, which takes around 21 days. Misting coreopsis seeds for moisture is one way to care for them. Planting coreopsis in a row will result in an abundance of growing coreopsis.
How deep do you plant tickseed?
Coreopsis can be cultivated from seed sown early indoors and transplanted outside after frost, or from potted plants put directly in the garden in the summer.
- Provide lots of light on a sunny windowsill as soon as seedlings emerge, or grow seedlings 3-4 inches under fluorescent plant lights turned on 16 hours per day and off for 8 hours at night. As the plants grow taller, increase the light intensity. Incandescent bulbs will not work since they will become too hot throughout the operation. Most plants need darkness to flourish, so don’t leave the lights on for more than 24 hours.
- Seedlings don’t require much fertilizer, so start feeding them when they’re 3-4 weeks old using a starter solution (half strength of a complete indoor houseplant meal) and follow the manufacturer’s instructions.
- If you’re growing coreopsis in small cells, you may need to transplant the seedlings to 3 or 4 inch pots once they’ve developed at least two pairs of true leaves before transplanting them to the garden to give them enough room to build robust roots.
- Coreopsis seedling plants must be “hardened off” before being planted in the garden. Move young seedlings to a covered spot outside for a week to acclimate them to outdoor conditions. At first, make sure they’re protected from the wind and the sun. If frost is forecast for the night, cover or bring containers inside, then return them to their original location in the morning. The plant’s cell structure is toughened during the hardening off process, which lowers transplant shock and scorching.
- After the threat of frost has passed, choose a position in full sun with well-drained soil. Sow from fall through early spring in frost-free locations.
- Remove weeds and incorporate organic matter into the top 6-8 inches of soil before smoothing and leveling.
- Turn the soil under to a depth of 6-12 inches, remove any debris, and carefully rake as level as possible to prepare the bed.
- Organic matter (leaf mold, compost, well-rotted manure) is beneficial to all gardens and is especially important in newly built neighborhoods.
- To encourage excellent root growth, unpot the plant and gently loosen the root ball with your hands.
- Place the root ball’s top at the same level as the surrounding soil. Fill to the top of the root ball with soil. With your hand, firmly press the earth down.
- To conserve water and reduce weeds, water well and add a light mulch layer (1-2 inches) on top of the soil.
Where do you plant tickseed?
Many gardeners value Coreopsis, often known as Tickseed, for the vibrant colors of its blossoms and their capacity to tolerate a wide range of soil conditions. There are approximately 100 species and innumerable hybrids to choose from, including annuals and perennials. Most of them are low-maintenance, drought-tolerant, and have a lengthy flowering season, lasting from early summer to late autumn, or even longer if deadheaded. Their seeds attract birds, while their nectar attracts butterflies. These American native prairie plants are workhorses in sunny borders and create wonderful cut blooms.
- Coreopsis are prolific bloomers, producing masses of stunning single, semi-double, or double daisy-like flowers in a variety of rich gold, yellow, orange, or red colors.
- Coreopsis rosea, with its gorgeous rose pink blooms, is a remarkable species. Bicolor Coreopsis flowers have a contrasting color in the center, which adds to their beauty.
- The foliage of Coreopsis varies in size and texture, ranging from enormous, low-growing leaves to mounds of narrow, finely textured leaves.
- Coreopsis grow in upright clumps that range in height from 6 in. to 48 in. (15-120 cm) depending on the variety. Although many cultivars self-sow across the garden, some are sterile.
- Coreopsis need at least 6 hours of direct sunlight per day to thrive. In partial shade, they become leggy, yet some afternoon shade is preferred in hot summer locations.
- They don’t mind what kind of soil they’re in as long as it’s well-drained. Poor, sandy, or rocky soils are tolerated by some.
- Once established, Coreopsis is drought tolerant. If your tickseeds are provided frequent water, however, you will have the best blossom production.
- Coreopsis are popular in beds and borders, rock gardens, cottage gardens, prairies, and meadows because they are easy to grow. They look great in containers or in a vase at home.
- The taller kinds are ideal for the rear of the border and cutting gardens, whereas the shorter, mounding variants are ideal for edging.
- Coreopsis are disease-free and low-maintenance plants that attract bees and butterflies but are neglected by deer.
- Cut off the spent blossoms to keep the flowers coming. Shearing the plant in midsummer (after the first flush of blooms) should help clean it up and encourage an autumn rebloom.
- Perennial coreopsis can be propagated by division, and some species can also be grown from seed or terminal cuttings. If put in a well-drained medium in warm, moist circumstances, seeds germinate in 2-3 weeks.
Does tickseed come back every year?
Some coreopsis are perennial, meaning they live for more than a year, while others are annual, meaning they only live for a year.
When shopping for and selecting which coreopsis to plant, it’s critical to first determine if the desired plant is an annual or perennial in your location. In warmer climates, some plants are perennial, while in colder climes, they do not survive the winter.
In front of taller summer perennials like garden phlox, bee balm, or coneflowers, plant annual coreopsis. Annual coreopsis looks beautiful in pots on patios and balconies as well.
How does tickseed spread?
Coreopsis has only one flaw: it is short-lived and unreliable in terms of perenniality. Many gardeners lament the fact that it only lasts two or three years. Others have seen that some varieties self-seed all over the garden and grow up in unexpected locations. Despite these drawbacks, this perennial favorite remains popular and is regularly planted or replanted year after year.
In order to improve Coreopsis, famous plantsman Darryl Probst and others instituted a number of hybridization programs.
Plant trials, including a three-year trial undertaken at the Mt. Cuba Center botanical garden in Delaware between 2012 and 2014, show that these hybridization efforts have improved the species.
With so many highly hybridized selections on the market these days, it’s a good idea to take a step back and learn about Coreopsis kinds and species.
Coreopsis is a genus of roughly 100 annual and perennial plants belonging to the Asteraceae (aster or daisy) family.
They can either form clumps or spread by rhizomatous roots.
The majority of Coreopsis species are clump forming.
Unfortunately, these are usually short-lived, and several of the members of this group are best handled as annuals.
Rhizomatous species have a longer lifespan and are more dependable perennials.
The following are some of the clump-forming and rhizomatous Coreopsis species commonly found at garden centers around the Mid-Atlantic:
- Coreopsis auriculata (Lobed or Mouse-Eared Coreopsis) Coreopsis auriculata (Lobed or Mouse-Eared Coreopsis) Orange-yellow blooms and oval-shaped leaves characterize this rhizomatous species. When in bloom, it develops spreading clumps that grow 2 to 3 feet tall and spreads quickly by rhizomes and seeds. A dwarf cultivar, ‘Nana,’ is half the size and one among the best in the genus. ‘Jethro Tull’ and ‘Zamphir,’ two popular C. auriculata cultivars, with open-ended, fluted ray blooms.
- C. grandiflora (Large-flowered Coreopsis) This clump-forming plant blooms early in the season and then blooms again later in the season.
- Although it is not a true perennial, lasting only 2 or 3 years on average, it has a strong ability to self-seed and may appear as a pleasant surprise throughout your garden.
When can I move tickseed?
Tickseed flowers (Coreopsis spp.) thrive in USDA plant hardiness zones 4 through 9. Many kinds climb up to 3 feet tall and spread 2 feet wide in the summer, with daisy-like flowers. Butterflies are drawn to this herbaceous perennial in the yard. Overcrowding of flower clusters can be avoided by transplanting tickseed. Tickseed clones are created by dividing up the parent clumps. Dig up the tickseed clumps every two to three years, either in the fall after the plant has finished blooming or in the early spring before new growth begins.
Can you plant tickseed in pots?
All summer long, tickseed creates a great border. Grow it in a clean flower garden to offer a bright yellow anchor to a plethora of bright blooms.
You may also plant it in containers and place it on a sunny terrace to greet any visitors to your home.
Cut a few blossoms and bring them inside whenever you need a little extra cheer.
They’ll live up to a week if you add some homemade fresh cut flower food, put them in a vase, and refresh the water daily.
Why is my tickseed dying?
Crown rot (Sclerotium fungus), root rot (Rhizoctonia fungus), and stem rot can all affect Coreopsis (Alternaria, Rhizoctonia or Sclerotinia fungi).
How do I prepare coreopsis for winter?
In the autumn, whether you decide to prune back or not, surround the plant with plenty of mulch. Apply at least 2 or 3 inches (57.5 cm) if you reside in the northern reaches of the growing zone, and more if you live in the northern reaches of the growing zone.
After late summer or early fall, don’t fertilize coreopsis. It’s not a good idea to stimulate young, sensitive growth that will be suffocated as temps drop.
Until the ground freezes, keep watering coreopsis and other perennials. Although it may seem counterintuitive, roots in damp soil are better able to resist freezing temperatures than those in dry soil. Watering and mulching are the most critical actions to do when it comes to winterizing coreopsis plants. Because the plant will be in a dormant stage of growth, no extra coreopsis winter care is required.
Remove the mulch as soon as the threat of frost has passed in the spring. If you wait too long, moist mulch could attract pests and illness. Apply a little application of all-purpose fertilizer, followed by a thin coating of new mulch.
When the flower petals begin to droop and fall, cut each flower stem back to the plant’s crown. After the blossom fades, the plant will not grow new flower buds on the stem. When a stem is first developing, it may produce more than one flower bud. Pinch the stem back far enough to remove the complete faded flower structure, not just the petals, in that situation. Remove the entire stalk once all of the flowers on it have blossomed. If deadheaded frequently, most large-flowered tickseeds will bloom until fall, but they bloom most prolifically during the long, hot days of summertime.