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powdery mildew on polemonium

snowdrop100snowdrop100 Posts: 41
in Problem solving

hi,

I have put my polemonium in and it gets all afternoon sun but has a large amount of powdery mildew on it. should i be worried about this spreading to surrounding plants? how can i get rid of it? so far, i have cut of the "worst" foliage with it on but i'm wondering if i need to be a bit harsher and cut right back. hopefully someone will tell me i can do this at the end of the summer so i can still enjoy the flowers for now image

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  • snowdrop100snowdrop100 Posts: 41

    thanks for the informative response. although now i'm slightly panicked because i didnt clean the blades between chops and i have used the secateurs since on my camellia (following your advice from my other thread actually by snipping out the top of it).

    i have also just checked and concerned its spread to neighbouring delphiniums (though not confirmed if thats what it is yet as very mild version if it is). 

    now tempted to just pull the polemonium out and jot it down to experience (This plant showed signed of powdery mildew when purchased at knock down price but i assumed it was some kind of plant food dried on or something)

  • nutcutletnutcutlet Posts: 27,444

    Some things are very prone to mildew and polemonium is one of them.

    Spores are everywhere, don't worry about the secateurs. As Edd says it doesn't need water. In fact I associated with very dry conditions.

    I stopped growing the blue ones because they always looked so bad. The yellow species don't seem to suffer



    In the sticks near Peterborough
  • YviestevieYviestevie Posts: 7,066

    Hi everyone, First time Ive posted on Problem Solving.  I have white powdery deposits on michaelmass daisies it looks like its been splashed with something but its on every leaf it isnt on any other plants nearby,  Any ideas.

    Hi from Kingswinford in the West Midlands
  • YviestevieYviestevie Posts: 7,066

    Thanks for the advice Ill just get the shears.......

    Hi from Kingswinford in the West Midlands
  • snowdrop100snowdrop100 Posts: 41

    i'm tempted to cut right back, apply some fungicide, feed and water well as per the advice. i'd rather be brash and get rid and have a healthy plant next year i think

  • snowdrop100snowdrop100 Posts: 41
    I just cut mine to the base and sprayed with a fungicide. I didn't water because I thought it would dilute the fungicide. Should I water well tomorrow or leave it a bit longer?
  • snowdrop100snowdrop100 Posts: 41

    hi all,

     

    update on this, did the chop, feed, water + fungicide. new mildew free shoots are coming through image

  • nutcutletnutcutlet Posts: 27,444

    image



    In the sticks near Peterborough
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