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July issue of The Irish Garden








Ciggie's Journal

Ciggie's Journal

Last Post 14 days 3 hours ago

Knautia macedonica

28 July 2009 07:24:54

I see the plant of the day is Knautia macedonica. Three of my plants have been blighted this year by powdery mildew and I was wondering if I should just get rid of them. Two others are blooming away quite happily, unscathed, although they are not planted in the same place.

I presume that the term 'powdery mildew' refers to the effect rather than the cause but will the fungus - whichever one it is - affect other plants if I pop them in the same spot. (I'm not convinced any of this makes sense.)

What I want to know is whether the fungus attacking the Knautia is likely to attack other plants. Hmmmmmmmmmm - when I think of it there are perfectly healthy 'other plants' around the Knautia.

OK - start again. Are my Knautia doomed? Is it just the year that's in it? Is the fungus here to stay? Will I bin the Knautia or should they be given a reprieve? Can it be dealt with and if so how? 

And there's a medal for anyone who has persevered so far.

Checking out digital cameras on the web these days. Fed up of having to rely on friends and missing the moment. 

 


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Monkells Monkells 28 July 2009 08:52:48

Have been reading up of Powdery Mildew as it is driving me mad on my Japanese Honeysuckle. I found this article suggesting good results with spraying once a week with 1oz of Bread Soda in a gallon of water. Should start at beginning of growing season, but I am going to give it a go.


Ciggie Ciggie 28 July 2009 13:03:35

Thanks for that Monkells. There might just be a stay of execution. I hope it works on the honeysuckle for you. It would be a pity to lose it.


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