Basic Care Watering and light pruning keep Marguerite daisies healthy. Provide about 1 inch of water weekly, or enough to moisten the top 6 inches of soil thoroughly. Spent blossom removal, or deadheading, improves the plants’ appearance and encourages more flowering.Click to see full answer. Also question is, how do you take care of a daisy plant? How to Take Care of Daisy Flowers Choose an area that receives full sun exposure. Use organically rich, well-drained soil and mix in about 4 inches of compost. Water regularly; if you planted seeds they will need to be watered more frequently (possibly twice a day) until they germinate, particularly if you live in a dry, hot region. Furthermore, are you supposed to deadhead daisies? The beat time for deadheading your plants is just before the blooms die back completely. In other words, as soon as the flowers begin to fade, wither, or turn brown, it’s time to deadhead. You can either cut the spent blooms with a sharp knife or use pruning shears. Keeping this in view, do Daisies need to be cut back? Cut the Shasta daisy plants back in the fall to 2 to 3 inches above the ground after the plants die back. In warm climates, the plants may stay green most of the year, and require pruning only to remove dead or straggly stems.Will daisies spread?The Shasta Daisy is a classic perennial, here in my garden, Zone 8, they happily spread by seed of their own volition but are not hard to dig up if they sprout where I do not want them. Shasta daisies tend to bloom in clumps from 2 to 3 feet tall and 1 to 2 feet wide. Daisies are great for cutting and summer bouquets.