How to Grow Coreopsis in Missouri

Coreopsis, commonly known as tickseed, is a perennial flowering plant that adds vibrant colors to gardens and landscapes. With its cheerful, daisy-like flowers and ability to thrive in various conditions, Coreopsis is a favorite among gardeners. If you’re in Missouri and looking to cultivate this beautiful plant, this guide will walk you through everything you need to know.

Understanding Coreopsis

Coreopsis belongs to the Asteraceae family and consists of approximately 80 species. These plants are native to North America and are renowned for their resilience and ability to attract pollinators. They typically bloom from early summer to fall, offering a long-lasting display of color in your garden. The most common types grown include:

• Coreopsis tinctoria (plains coreopsis)
• Coreopsis lanceolata (lanceleaf coreopsis)
• Coreopsis grandiflora (large-flowered coreopsis)

These species vary in height, flower color, and blooming duration, making them versatile choices for any garden setup.

Choosing the Right Location

Selecting the right location for planting Coreopsis in Missouri is critical for its success. Here are key factors to consider:

Sunlight

Coreopsis thrives in full sun, which means it requires at least 6 hours of direct sunlight per day. Choose a location that receives ample sunlight throughout the day for optimal growth and flowering.

Soil Type

Coreopsis prefers well-draining soil with a pH level between 6.0 and 7.0. Missouri’s soil can vary widely, so it’s important to amend it if necessary. Incorporate organic matter like compost or well-rotted manure into the soil to improve drainage and nutrient content.

Space Considerations

When planting Coreopsis, consider the mature size of the plants. Most varieties range from 1 to 3 feet tall and can spread anywhere from 1 to 2 feet wide. Ensure ample space between plants (12-18 inches) to allow for air circulation and growth.

Planting Coreopsis

Once you’ve chosen the right location, it’s time to plant your Coreopsis. Below are steps to successfully plant Coreopsis in Missouri:

When to Plant

The best time to plant Coreopsis in Missouri is during the spring after the last frost or in early fall. This allows the roots to establish before extreme weather conditions arise.

Seeds vs. Transplants

You can grow Coreopsis from seeds or transplants:

• Seeds: Start seeds indoors about 6-8 weeks before the last frost or sow them directly into the garden after all risk of frost has passed.
• Transplants: If you prefer a quicker start, purchase young plants from a nursery or garden center.

Planting Steps

1. Prepare the Soil: Clear the planting area of any weeds or debris. Loosen the soil with a garden fork or tiller.
2. Sow Seeds or Transplant: For seeds, scatter them on the surface of the soil and lightly press them in without covering completely as they require light for germination. For transplants, dig a hole slightly larger than the root ball, place the plant inside, and backfill with soil.
3. Water Thoroughly: After planting, water the area well to help settle the soil around the roots.

Watering and Fertilization

Watering Requirements

While Coreopsis is drought-tolerant once established, consistent watering during its initial growth phase is crucial:

• Water newly planted Coreopsis every few days until they establish roots.
• Once established, reduce watering frequency to about once a week unless there’s prolonged dry weather.

Fertilization Needs

Coreopsis does not require heavy fertilization; excessive nutrients can lead to lush foliage at the expense of flowers:

• Apply a balanced fertilizer (like a 10-10-10) sparingly in early spring according to package instructions.
• Avoid fertilizing in late summer or fall as it may encourage new growth that could be damaged by winter cold.

Pruning and Maintenance

Regular maintenance keeps your Coreopsis healthy and promotes vigorous blooming:

Deadheading

To encourage continuous blooming throughout the summer:

• Remove spent flowers by pinching or cutting them off just above a set of leaves.

This practice redirects energy toward new blooms rather than seed production.

Dividing Plants

Dividing Coreopsis every few years helps rejuvenate older plants and encourages flowering:

• In early spring or fall, carefully dig up clumps of Coreopsis.
• Use a sharp spade or knife to cut sections into smaller pieces with roots attached.
• Replant at the same depth they were growing previously.

Pest Management

Coreopsis is relatively resistant to pests; however, keep an eye out for aphids and spider mites. If infestations occur:

• Use insecticidal soap or neem oil as a natural remedy.
• Encourage natural predators like ladybugs.

Winter Care

Missouri winters can be harsh on perennials like Coreopsis. Follow these steps for winter care:

Mulching

Apply a layer of mulch (about 2-3 inches) around your plants in late fall:

• Use organic mulch like shredded leaves or straw.
• This helps insulate the roots from freezing temperatures while also retaining moisture during thaw cycles.

Cut Back Foliage

In late fall after frost, cut back spent foliage:

• Leave about 4-6 inches above ground level.

This prepares your plant for winter while maintaining its shape.

Attracting Pollinators

One of the many benefits of growing Coreopsis is its ability to attract pollinators such as bees and butterflies:

Plant Companions

Consider adding other native flowering plants nearby:

• Black-eyed Susans
• Coneflowers
• Milkweed

These companion plants will provide additional food sources for beneficial insects and enhance your garden’s biodiversity.

Conclusion

Growing Coreopsis in Missouri can enhance your garden’s aesthetic while supporting local wildlife. By understanding its requirements—such as sunlight, soil type, and maintenance—you’ll create an environment where these joyful flowers can flourish year after year. Whether you’re an experienced gardener or new to planting perennials, Coreopsis offers an easy-to-care-for option that rewards you with vibrant blooms through much of the growing season. With proper care and attention, you can enjoy an explosion of color that brings beauty not just to your landscape but also helps sustain local ecosystems by attracting essential pollinators.

Embrace this charming flower’s potential today!