How To Care For Rudbeckia. Mulching plants in borders with well-rotted manure or garden compost each spring should be sufficient. To combat this particular leaf spot youll need a fungicide that contains the active ingredient chlorothalonil such as.
21092017 Newly planted Rudbeckia needs watering daily for the first two weeks to help establish its root system. The long stems provide excellent deer resistance. Rudbeckia should be planted in full sun but can tolerate partial shade.
You can grow these plants in mass plantings on the edges of your water garden or in your wildlife garden.
To combat this particular leaf spot youll need a fungicide that contains the active ingredient chlorothalonil such as. Apply a generous mulch in spring or after planting out annuals and feed regularly through the growing season. Coneflower is an herbaceous perennial plant. Start seed about six to eight weeks before the last expected frost.