large-flowered tickseed

Large-flowered tickseed should be watered once per week during its growing season, which is typically early spring through early fall. The soil should be kept moderately moist, but not soggy. Depending on the weather and the soil, you may want to adjust the frequency of watering a little, but an average of about 1 inch of water per week is enough to keep the plant thriving. Water only when the top inch of soil is dry. When you do water, apply water directly to the soil around the base of the plant rather than from above to reduce the risk of fungal diseases. In mid-summer, deep watering once or twice a month can help keep the plant looking its best and encourage deeper rooting. During the winter, watering should be reduced to once every few weeks or even stopped entirely.

Large-flowered tickseed (Coreopsis grandiflora 'Mayfield Giant') will grow best in a sunny spot that receives at least 6-8 hours of direct sunlight each day. However, too much direct sunlight can cause scorching of the foliage, so during the hottest part of the day, some dappled shade may be beneficial. These plants should do best when receiving full sun from early morning until mid-afternoon with some light shade in the hotter part of the day.

Large-flowered tickseed (Coreopsis grandiflora 'Mayfield Giant') should be pruned once a year in late winter/early spring. This plants typically grows to a height of 2-3 feet and should be trimmed in order to maintain its shape and encourage branching. Pruning should be done just above the leaf node where the previous season’s growth begins. Deadheading of spent flowers is optional, and may lead to additional bloom. If deadheading is done, it should only be done in the late summer/early fall as pruning off flower buds during the summer will reduce blooms. It is important to note that Coreopsis Grandiflora 'Mayfield Giant' carries its bloom on current season's growth, so it's important not to prune off too many stems, or you will reduce the amount of blooms the plant produces.