Marianne's Response
clrae’s Question
My many daylilies have rust streaks on them. what can i do to save them? I bought some Neem oil–will that help? I guess i should cut them back–many of them are evergreen tho and some are starting to re-bloom.
Posted by claudia lofing on October 17, 2013
Marianne's Response
No worries. Fall is when many perennials show signs of leaf blight and the solution is as simple as cutting the plants, stems and leaves entirely to the ground. It is the moist weather that encourages this fungus among us and your daylilies will get a fresh start in the spring. Good fall cleanup such as removing all the diseased and damaged foliage after you cut the plants back to the ground is the best way to prevent future outbreaks. Good air circulation is also essential so if your daylilies have grown together into crowded clumps remember that fall is a good time to dig and divide the daylilies giving the side divisions plenty of room. Get rid of the older middle sections of the clumps as the new growth from the sides will the most vigorous. You need only leave a one inch section of stem poking above the ground to mark where the new divisions are planted. In the spring the tubers will send up fresh new growth. For maximum blooms work some compost or manure into the soil when you plant and sprinkle a teaspoon of Osmocote around the base of each clump in the spring. You will be impressed with what a fresh start can do for established daylilies. Keep growing, Marianne Binetti
