Gardening Questions And Answers
Usually plants don’t bloom for three reasons: too much nitrogen, too little sun and too young (which isn’t the case with perennials such as these, but applies to shrubs and trees). Perennials like a little time-release fertilizer at the first of the growing season, but nothing too heavy on nitrogen.
Water plants daily Water your daisies thoroughly and prepare a more generous watering program for the weeks to come. Daisies need regular watering, reports Yardener. If you found your daisies growing in thin soil, irrigate with 1 inch of water daily until you are able to build up the organic material in the soil.
Shasta daisies can withstand trimming at any point to remove spent flowers, dead or diseased stems, and minimize seeding. It is also important to pinch the tops of stems when they are 6 inches (15 cm.) This promotes fuller plants and more blooms. The deadheading process will also encourage more flowers.
Because they are capable of spreading and are non-native, consider keeping them contained in garden beds away from wild areas. Shasta daisies tend to form clumps that are 2 to 3 feet tall and 1 to 2 feet wide. They bear all-white daisy petals, yellow disk florets, and contrasting glossy, dark green leaves.
Leaves Covered With White Powder Have Powdery Mildew Infected leaves are coated with a white or ash-gray powdery mold. Badly infected shasta daisy leaves become discolored and distorted, then drop off. Powdery mildews thrive in both very humid or very dry weather. They are not life threatening, but they are unsightly.
Larvae are slender white grubs. These insects love almost any type of flower and beans, tomatoes, cucumbers and melons. Mix water and nematodes into soil late in the day in midsummer to control larvae. Grow coneflowers, hydrangea, shasta daisies, thyme, yarrow or angelica to attract this bug’s predators.
Cause. Root rot in Shasta daisies is caused by Pythium pathogens, which are found in most cultivated soil. They are particularly prevalent — and dangerous to Shasta daisies — when a moisture level of 70 percent or higher is present in the soil, the University of California Integrated Pest Management notes.