[joyce c]

The leaves on my sweet peas look like it's got some sort of decease.  It looks like whitish grey markings. The flowers look healthy, although I expected there to be more.  They're 'Kings' variety.  If it would help, I could try to put a photo onto here.

[mumofstig]

It sounds as if they have mildew

this old thread may help 

[Bantymad]

I have three lots of sweet peas and one lot has a light grayish powdery mould on the leaves, they are in a large pot on the patio, all the others are realy good, can anyone tell me what it is or what may be the cause please.

[Yorkie]

Your post has been merged with another one with the same questions - have a look at the posts above yours for more info about mildew, which I think you probably have (well, your sweet peas  )

[Bantymad]

Thanks Yorkie, any idea what the cause may be, i have it on a couple of things, even some weeds growing in the front drive.

[joyce c]

Thanks all, for the advise on mildew.  I've been cutting off the pods, and some of the suckers, is this correct.  I also cut myself a few of the flowers every few days.  Am I doing everything I should be doing.

[Yorkie]

Here's the RHS page on mildew for one and all to see 

http://apps.rhs.org.uk/advicesearch/Profile.aspx?pid=253

[mrs bouquet]

Thanks all, for the advise on mildew.  I've been cutting off the pods, and some of the suckers, is this correct.  I also cut myself a few of the flowers every few days.  Am I doing everything I should be doing.

Thats what I do, the more you can remove the suckers, it will prevent them from twisting around new flower stems, and so your flowers will be nice and long and straight.  It is important to remove all the dead flowers to increase flowering.  I think you are doing just fine. regards,  Mrs Bouquet.