Return to the Growing Tomatoes Forum | Post a Follow-Up

white fuzz/spots on tomato leaves

Posted by SgtStinkWeed none (My Page) on
Fri, Jul 18, 14 at 13:15

About a week ago my younger tomato plants started getting this white fuzz,coating on the leaves. Im not sure what the heck it is, but I am ready for it to go. Ive never used anything beyond water and tomato spikes on them. Im New to fungicides/pesticides, also a bit weary since I dont want to use anything that could be harmful health wise down the road.

any tips on what this is and how i can deal with it?

Follow-Up Postings:

RE: white fuzz/spots on tomato leaves

Looks like powdery mildew

RE: white fuzz/spots on tomato leaves

Powdery Mildew .. Follow the instructions on the link below, or simply google and you'll find all the help you need..
Also, that soil looks VERY wet.. Not sure of the mix, but it looks like it'd benefit from some peat or coco .. I'm a fan of the latter... Good luck =)

Here is a link that might be useful: Powdery mildew

RE: white fuzz/spots on tomato leaves

Yeah, looks like powdery mildew. Is your plant in a humid area without much ventilation. I've had it a few times on melon plants. IMO its hard to stop, but can be slowed down a little. Remove as many of the affected leaves as possible and spray with a fungicide.

RE: white fuzz/spots on tomato leaves

yea it appears powdery milder is the culprit. I am also seeing some leaves getting chew marks.

can anyone recommend a good 3-1 spray? i see many. then I see the whloe "beware its a GMO" ect using google search. I just want a good spray that will keep the bad bug/fungi off.

RE: white fuzz/spots on tomato leaves

  • Posted by digdirt 6b-7a North AR (My Page) on
    Fri, Jul 18, 14 at 15:09

Hmmm not sure what "GMO" has to do with powdery mildew or its controls or why it should even come up. no correlation at all. But there are several good products recommended in the article Michael linked above. All are organic. Safer products are probably available to you locally.

Why do you feel you need a 3 in 1 spray (pesticide, miticide, fungicide)? None of them do a good job on any of the 3 things they are supposed to control simply because they are all mixed together and diluted. In this case what you need is a fungicide, just a fungicide.


RE: white fuzz/spots on tomato leaves

There are two kindsof Powdery Mildew so I'm asksing where, specifically are you growing your tomatoes,in a geographic sense,such as coastal CA, coasta lFL, hot humid south with plants too close together or otherwise
,so it might help if you did that.

The treatment for both is the same,a good anti-fungal, but first take off and dispose of all affected foliage before you treat with any ant-fungals.


RE: white fuzz/spots on tomato leaves

Yep I did prune as much as i can, as for the whole GMO thing I dont even understand it, I just want to use a pesticide/fungicide that not going to have me keel over if i eat my own tomatoes lol. As for why I want a "3 in 1" spray is because I am a newcomer to gardening. Much like my mature plant paid the price when I just jumped into using miracle grow.

I see some occasional bite holes, and the powery mildew is indeed on my two youngest plants. But Im trying keeping it simple as possible. Thats why i went with the tomato spikes. Helped the Nitrogen burnt plant recover and flourish. Meanwhile keeps me error free.
Also Im in the midwest,Nebraska to be exact. we've had some unseasonably friendly weather. Its late july and were are hitting 70s tops. Usually in the 90s. Sparse rain, but here in the midwest anythign we usually too much lol.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Growing Tomatoes Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here