Some of my bare root Echinacea White Swan are showing signs of Botrytis (grey mould) on their leaves, I have sprayed already with a product that supposedly responds to black spot, grey mould and pest infestations but the instructions state that I can only spray a max of 4 times a year and what started as one leaf on one plant is now spreading to several other plants. What do I do about this guys?
Take off the foliage with the botrytis on carefully so you don't spread the spore, then give a few puffs of yellow sulphur ( you can find this at most garden centres ) go really easy with any watering as botrytis loves damp conditions then hopefully you should be ok.If its not logical to take the foliage off just use the sulphur and hopefully this will still work.
if I'm storing any barefoot plants over winter, before I put them to store I always use sulphur.
I take some dilute Hydrogen Perxoide and using cotton wool wipe it over the infected area and it kills the Botrytis but leaves the plant foliage alone.
Thanks guys...I will get right on it