Oh flipping fiddlesticks! Mildew's started on my asters!
I bought these dwarf asters from a garden centre last autumn. I don't know whether they are disease resistant varieties or not, but I so loved the pastel coloured flowers they produced, so I've kept them and am trying to grow them up to full size in a big pot for giving a fine display this autumn. I have some 'Myclobutanyl' systemic fungicide, but it says on the label "not suitable for asters". I am giving them good air circulation, but does anyone know of anything I can do? I have a feeling it may spread more and more. Is there anything that would be suitable to spray with?
- 21 May, 2009