Origin:
Coreopsis tripteris L. var. smithii Sherff, commonly known as Smith's tickseed, is a perennial plant species that is native to North America, specifically to the United States, including Illinois, Indiana, and Kentucky.
Common Names:
Aside from Smith's tickseed, Coreopsis tripteris L. var. smithii Sherff is also commonly known as Tall tickseed, Three-lobed tickseed, and Tall Coreopsis.
Uses:
Coreopsis tripteris L. var. smithii Sherff is cultivated for ornamental purposes due to its attractive yellow flowerheads that bloom in the late summer through fall. It is often planted in mixed borders, meadows, and natural or wildlife gardens. The plant is also used by herbalists to relieve nausea, vomiting, and indigestion.
General Appearance:
Coreopsis tripteris L. var. smithii Sherff typically grows up to 5 feet tall and 2 feet wide. The plant has hairy stems and foliage that is typically three-lobed and bright green. The flowerheads are bright yellow with a diameter of 1.5 to 2 inches and bloom in a panicle arrangement. It blooms from July to September and has a long blooming period, providing a great benefit to pollinators. The plant requires full sun and well-drained soil to thrive. It can also tolerate some drought and is relatively low maintenance.
Light Requirements:
Coreopsis tripteris L. var. smithii Sherff thrives in full sun conditions. It requires at least 6-8 hours of direct sunlight to grow optimally. Therefore, it is advisable to plant it in an open area with little or no shade to ensure it receives enough sunlight.
Temperature Requirements:
This plant is native to North America and typically grows in USDA zones 3 to 9. It can withstand a broad range of temperatures but grows best between 60-80°F. Temperatures above 90°F can cause wilting and hinder its growth, whereas temperatures below 55°F can stunt the growth.
Soil Requirements:
The Coreopsis tripteris L. var. smithii Sherff typically thrives in well-draining soil. It can grow in a wide range of soil pH levels, but a slightly acidic to neutral soil range from 6.0 to 7.5 is optimal. The plant thrives in soil rich in organic matter and nutrients. It is advisable to amend the soil with organic matter before planting to ensure optimal growth and development.
Cultivation Methods for Coreopsis tripteris L. var. smithii Sherff
Coreopsis tripteris L. var. smithii Sherff or Smith's coreopsis is a perennial herb that is native to the United States. The cultivation of this plant is not difficult. Generally, it prefers well-drained soil that is moist, but not waterlogged. It can tolerate a wide range of soil types, but it prefers slightly acidic soil with a pH range of 5.5 to 6.5. It should be planted in full sun but can also tolerate partial shade.
When planting Smith's coreopsis, make sure to give each plant enough space to grow. They can grow up to six feet tall and up to four feet wide. They should be planted about 24 to 36 inches apart.
Watering Needs for Coreopsis tripteris L. var. smithii Sherff
Smith's coreopsis needs to be watered regularly for the first few months after planting until the roots become established. After the plant is established, it is relatively drought tolerant and only needs to be watered during extended periods of dry weather. However, if the plant is grown in sandy soil, it may need more frequent watering.
It is important not to overwater this plant, as it can cause root rot. The best way to water Smith's coreopsis is to give it a deep watering once a week rather than frequent shallow waterings.
Fertilization for Coreopsis tripteris L. var. smithii Sherff
Smith's coreopsis does not require a lot of fertilizer. It is a light feeder and only needs to be fertilized once a year in the spring. A balanced fertilizer with an NPK ratio of 10-10-10 is recommended. It is important not to overfertilize the plant, as it can cause excessive growth and reduce flowering.
Pruning Coreopsis tripteris L. var. smithii Sherff
Pruning Smith's coreopsis is not necessary, but it can help to promote bushier growth and increase the number of flowers. Deadheading spent blooms can also encourage the plant to produce more flowers. To deadhead, simply remove the spent blooms by cutting them back to the base of the flower stem.
If the plant becomes too leggy or starts to flop over, you can trim it back by about one-third in late spring or early summer. This will help to promote bushier growth and reduce the risk of the plant falling over.
Propagation Methods of Coreopsis Tripteris L. var. Smithii Sherff
Coreopsis tripteris L. var. smithii Sherff, commonly known as Smith's tickseed, is a beautiful and easy-to-grow perennial flower that can be propagated by various techniques. Here are the three most common methods for propagating Coreopsis tripteris:
Division
Division is the most common way of propagating Coreopsis tripteris. The best time to divide the plant is in early spring before new growth appears. To divide the plant, dig up the entire clump and separate the root ball into several sections using a sharp, sterilized knife or garden spade. Each section should have a few healthy roots and at least one growing point. Replant the sections in well-draining soil, spacing them about 18 to 24 inches apart. Water the transplants thoroughly and keep the soil moist until new growth appears.
Cuttings
Coreopsis tripteris can also be propagated by cuttings. Take stem cuttings in early summer when the plant is actively growing. Cut a 3-4 inch section of stem with a clean, sharp knife, making the cut just below a set of leaves. Remove the lower leaves and any flower buds, dip the cut end in rooting hormone powder, and plant it in a pot filled with moist potting mix. Keep the cutting in bright but indirect sunlight and water it regularly to maintain a moist soil. After a few weeks, the cutting should develop roots and can be transplanted to its permanent location.
Seed
Propagation by seed is less common, but it’s a convenient way to produce large quantities of plants. Collect mature seeds from the spent flowers in late summer to early fall, and store them in a cool, dry place. In early spring, sow the seeds in a well-prepared seedbed or in containers filled with good quality potting soil. Cover the seeds with a thin layer of soil, water, and keep the soil moist until germination. When the seedlings are large enough to handle, transplant them to their permanent location in the garden.
Disease and Pest Management for Coreopsis tripteris L. var. smithii Sherff Plant
Coreopsis tripteris L. var. smithii Sherff, commonly known as tickseed, is a sturdy perennial plant that is easy to grow and maintain. However, like other plants, it is vulnerable to diseases and pest infestations. Here are some common diseases and pests that might affect the plant and ways to manage them:
Diseases
Fungal Diseases: Fungal diseases are a common occurrence in plants, including Coreopsis tripteris. Some of the common fungal diseases that might affect the plant include powdery mildew, root rot, and crown rot. These diseases can cause the leaves to become spotted or yellowed, the stem to become weak, and the plant to wilt.
Pest Infestations: The plant might fall victim to various pests, such as spider mites, aphids, and whiteflies. These pests feed on the plant sap, causing the leaves to become discoloured and distorted. They also release toxic substances that weaken the plant and make it more susceptible to diseases.
Pest Management
Biological Control: One of the most effective ways to prevent and manage pest infestations is through biological control. This involves introducing natural predators of the pests, such as ladybugs and lacewings, that feed on them. Biological control is an eco-friendly and sustainable method of pest control that doesn't harm the environment.
Chemical Control: When biological control doesn't work, chemical control is the next option. Chemical pesticides can be applied to control the pests, but care must be taken not to overuse the pesticides, as they can harm both the pests and beneficial insects, such as bees and butterflies. Always follow the instructions on the pesticide container and wear the appropriate protective gear when handling them.
Disease Management
Practicing Good Hygiene: One of the essential disease management practices is the proper maintenance of the plant's surroundings. Ensure that the plant gets enough air circulation, and avoid overcrowding. Also, remove any dead plant debris, as they harbour the pathogens that cause the diseases to spread.
Using Fungicides: Fungicides are chemical compounds that inhibit the growth of fungi on the plant. They can be applied to the plant if the diseases are not responsive to cultural control practices. However, always follow the instructions on the fungicide container and use the appropriate protective gear when handling them.
By following these practices, you can prevent or manage pest infestations and diseases in your Coreopsis tripteris L. var. smithii Sherff plant. With good maintenance, the plant will thrive and flower beautifully.
