Large-flowered Tickseed should be watered deeply and regularly for best health and flowering performance. It needs 1” – 2” of water per week, either from rainfall or irrigation. Water your plants in the morning, allowing the foliage to dry off by the evening to avoid potential disease issues. If rainfall is inadequate, water plants with a slow, deep soaking to ensure that the water penetrates deep into the soil. Wait until the top 2” – 3” of soil has dried out before watering again. This encourages the plants to produce a deep root system. In periods of extreme heat or drought, plants may need additional water.

Large-flowered tickseed (Coreopsis grandiflora) prefers full sun exposure, which means it should receive at least 6 to 8 hours of direct sunlight each day for best growth and flowering. When grown in partial shade, its flowering will diminish significantly and the plant may become leggy and prone to disease. During the hottest months of summer, midday sun can be too much for this plant and it’s best to provide shade during the afternoon hours. During the winter months, when the light is weaker, full sun exposure will still be beneficial, giving the plant the energy it needs to flourish and flower.

Large-flowered tickseed (Coreopsis grandiflora) is a fast-growing plant that blooms well for extended periods. It should be pruned in late winter or early spring to promote sufficient growth. To do this, start by cutting back the plant to a height of 4 to 6 inches. This encourages the growth of fresh, strong stems for increased flowering. Additionally, deadheading the coreopsis regularly through the growing season by cutting off faded flowers promotes further flowering. Finally, lightly pruning the plant in mid- to late summer will help prevent it from becoming leggy.

Compact plants with masses of yellow flowers.

Coreópsis