Powdery Mildew

[noviceveggrower]

Hi,
I think I have got powdery mildew on my rhubarb. Looked it up on the internet but it was giving more info on other mildew on plants.
So am wanting to know if it could spread to any other plants and how to get rid of it. Or is it going to be a case of lifting and getting rid of it. I think I saw an ant on it if that has something to do with it.
I had to move the rhubarb last year as it was in an unsuitable place.
Thanks

[Two_Sheds]

Powdery Mildew thrives in dry conditions, so the first thing is to keep susceptible plants very well watered (my greenhouse overwintered carrots have it, because I've been lazy about watering them.)