Tomatoville® Gardening Forums


Notices

Information and discussion regarding garden diseases, insects and other unwelcome critters.

Reply
 
Thread Tools Display Modes
Old April 19, 2017   #1
Pamela58
Tomatovillian™
 
Join Date: Feb 2013
Location: St. Paul MN, Zone 4b
Posts: 29
Default Gray Mold on Seedling Soil

I have a light gray mold on some of my tomato seedlings.

The seedlings are about 7 weeks old and planted in Promix. I have them under T5 and T8 lights and have been watering them from the bottom.

On one or two of the plants a leaf or two is drooping. The others look fine. I suspect I have been watering too much.

Any ideas of what it is and what to do?

Thanks so much!

Pam
Pamela58 is offline   Reply With Quote
Old April 19, 2017   #2
Pamela58
Tomatovillian™
 
Join Date: Feb 2013
Location: St. Paul MN, Zone 4b
Posts: 29
Default

IMG_0280.JPG

IMG_0281.JPG
Pamela58 is offline   Reply With Quote
Old April 19, 2017   #3
Pamela58
Tomatovillian™
 
Join Date: Feb 2013
Location: St. Paul MN, Zone 4b
Posts: 29
Default

Here are some pix
Attached Images
File Type: jpg IMG_0281.JPG (116.4 KB, 72 views)
File Type: jpg IMG_0280.JPG (101.8 KB, 74 views)
Pamela58 is offline   Reply With Quote
Old April 19, 2017   #4
dmforcier
Tomatovillian™
 
dmforcier's Avatar
 
Join Date: Apr 2016
Location: Dallas, TX
Posts: 3,486
Default

I suspect that your pots are too wet but that is hard to confirm from the pics. Skip watering until you're sure that they're dry.

You might try spritzing with a mild hydrogen peroxide solution.
__________________


Stupidity got us into this mess. Why can't it get us out?
- Will Rogers


dmforcier is offline   Reply With Quote
Old April 19, 2017   #5
Ricky Shaw
Tomatovillian™
 
Ricky Shaw's Avatar
 
Join Date: Aug 2015
Location: Zone 6a Denver North Metro
Posts: 1,853
Default

I'd recommend the PromixHP for seedling duty, at 30% perlite it's nearly impossible to overwater. The downside is it drys out quickly, but the reduction or elimination damping off and molds is well worth the effort of extra watering cycles.
Ricky Shaw is offline   Reply With Quote
Old April 19, 2017   #6
Pamela58
Tomatovillian™
 
Join Date: Feb 2013
Location: St. Paul MN, Zone 4b
Posts: 29
Default

Thanks Ricky.

I will let the pots dry out and also spray the seedlings with hydrogen peroxide solution. Do I just spray it on the soil where the mold is or on the entire plant and pot?
Pamela58 is offline   Reply With Quote
Old April 19, 2017   #7
dmforcier
Tomatovillian™
 
dmforcier's Avatar
 
Join Date: Apr 2016
Location: Dallas, TX
Posts: 3,486
Default

I'd just target the mold.
__________________


Stupidity got us into this mess. Why can't it get us out?
- Will Rogers


dmforcier is offline   Reply With Quote
Old April 19, 2017   #8
Cole_Robbie
Tomatovillian™
 
Cole_Robbie's Avatar
 
Join Date: Jun 2012
Location: Illinois, zone 6
Posts: 7,238
Default

It's a lichen, not a mold. It grows on peat-based mixes. It is harmless, if not possibly even beneficial.
Cole_Robbie is offline   Reply With Quote
Old April 21, 2017   #9
Pamela58
Tomatovillian™
 
Join Date: Feb 2013
Location: St. Paul MN, Zone 4b
Posts: 29
Default

I used the hydrogen peroxide spray and backed off on the watering.

My seedlings look great after one day!

Thanks everyone for your help!

Pam
Pamela58 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:43 AM.


★ Tomatoville® is a registered trademark of Commerce Holdings, LLC ★ All Content ©2017 Commerce Holdings, LLC ★