why are my courgette plants covered in mildew?

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Grubbypaws

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why are my courgette plants covered in mildew?
« on: August 10, 2009, 10:04 »
I am growing my courgettes in large containers on the patio. They are well looked after and at the moment are still producing a constant supply of fruit, but the leaves are becoming covered in mildew and the plants are beginning to look very poorly. What am I doing wrong?

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sunshineband

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Re: why are my courgette plants covered in mildew?
« Reply #1 on: August 10, 2009, 10:51 »
http://chat.allotment-garden.org/index.php?topic=42782.0

You get mildew if the roots are too dry, or if conditions are too damp  :wacko: :wacko: so you could think about this and see if it applies. However, sometimes it seems to just arrive tbh  :tongue2:

I am trying spraying mine with a mix of milk and water, 1 part milk to 9 of water.

I have attached a link to the thread about this.

Hope it helps  :D
« Last Edit: August 10, 2009, 10:54 by sunshineband »
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JayG

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Re: why are my courgette plants covered in mildew?
« Reply #2 on: August 10, 2009, 14:56 »
In my experience courgettes and squashes always finish up with powdery mildew as the weather gets cooler and damper in late summer and the plants start to get a bit knackered.

It usually starts in the older leaves which are nearest the ground and therefore moister for longer; take any dying leaves off whether mildewed or not. This will slow the spread of existing infection and also improve the air circulation round the plant which will also help, as will trying to keep the leaves as dry as possible when watering.

Not tried the diluted milk treatment - can't quite bring myself to deliberately cause more leaf wetness but would certainly give it a go if folk out there really think it works.
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