by Bronwynne Bailey
Coreopsis plants (Coreopsis spp.) are a perfect choice for beds or borders. There are more than eighty varieties of coreopsis (also called tickseed) so you can be sure to find a variety you like. These daisy-like flowers are unscented, but the leaves smell like anise.
Coreopsis is the Mississippi state wildflower. Native to North America, they grow in upright clumps and flowers throughout the summer. This hardy plant grows in USDA zones two through eight, they die back after frost and return in spring. They also attract numerous pollinators, including bees, butterflies, and other beneficial insects, making them a great addition to pollinator gardens. Because they are low maintenance, these plants are ideal for beginner gardeners. They are also deer resistant. Their vibrant colors will bring a burst of sunshine to your landscape.
Growth Habits
The average lifespan is five years. Divide after year three to propagate or replace the plants when flowering declines.
Soil Preferences
While it tolerates a wide variety of soil conditions and textures, make sure the planting bed has a well-drained soil. Heavy, wet clay soils should be amended with compost and peat moss to help with drainage.
Planting Depth & Spacing
Plant coreopsis in full sun for the best flowering performance, this means six to eight hours of direct light on most days. The plant will tolerate part-sun but will not flower as heavily. Leave some space around plants for air circulation.
Watering
New plants need weekly watering of one inch to keep the soil evenly moist (but not soggy) until they are established. These plants are drought tolerant but flower best with an inch of water weekly. Excess water will produce leggy plants and fewer flowers. Early morning watering is best as it allows the leaves time to dry out during the day.
Fertilizing
Fertilizer is not necessary unless you have very poor soil. Excess fertilizer produces leggy plants.
Pruning
Deadheading coreopsis will promote flowering through fall, remove spent flowers and stems. You can also cut back to base plant midseason to promote a second flush of blooms.
Pests
Coreopsis is susceptible to snails, slugs, and powdery mildew. Yellowing leaves indicate overwatering or lack of nutrients. If leaves turn brown or white suddenly, the plant receives too much sun.
Propagation
Propagation is best achieved through the division of plants. You can also propagate indoors via seeds for six to eight weeks and acclimate slowly to outdoor conditions. They will also propagate through rhizomes and self-seeding.
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