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Is this damping off disease??

10 years ago

I started some tomatoes from seed for the first time about three weeks ago, and I'm wondering if they now have damping off. I used sterile, soilless potting mix but it had been opened about a month earlier when I started my cabbages. Would the fungus have infected that potting mix while it was sitting unused for a month? Here's some photos:

Or is there a chance the seeds were just too shallow when I planted them, resulting in their root starting to grow above the soil?

If it is damping off, what can I do to prevent it from spreading to my other seedlings in the same flat that don't seem to be affected (yet)?

Comments (12)

  • 10 years ago

    Oooh I hope you're right! I'm looking at the base of the stem, where it seems thinner, grows along the dirt and then abruptly gets thicker and bends straight upwards.

  • 10 years ago

    It's just too shallow. Pot them up and you can bury half the stem. They look nice and healthy!

    Linda

  • 10 years ago

    Thank you, Linda! I will be potting them up into 4" pots soon!

  • 10 years ago

    I think it is damping off and the seedlings are trying to hang on.

    Re potting deeper into a well drained soil, and less watering can help. JMO

    Sey

  • 10 years ago

    Sey - that is not what I want to hear!!! :-D I stopped watering them for a couple days, and the soil was dry when I watered them last night. I'll pot them up tonight, up to their first set of leaves, give it a few days before I water them again and hope for the best.

  • 10 years ago

    Been growing tomatoes off and on for fifty years. Does not look to be damping off per your pics. Leaf color looks good.

    I have posted an excellent link to seed starting and maintenance done by NCTomatoman who is on tomatoville.com ...Superb videos...invest a few minutes to view. Good Growing!

    http://www.craiglehoullier.com/resources/

  • 10 years ago

    Thanks tbird! Leaf color does look good in person, they show no signs of drying out or wilting. I'm really hoping it's not damping off, but will still pot them up just in case.

  • 10 years ago

    May or may not be Damping Off but it sure looks like a fungal disease. A Lab. test is a better conformation then looking at pictures. There are various fungal types that will affect the stem and none are a welcome sight. Sterilized soil helps but is never a gaurantee that you won't get the disease.

    I would not try to save affected plants. If it is timber rot it will get worse as plants are grown.

  • 10 years ago

    I sure don't see anything wrong with them, much less any damp-off. If they were mine I sure would transplant into larger pots and try to save them. Ultimately it is your choice. Curious about what variety they are?

    Dave

  • 10 years ago

    I have seen this before with flowers but not tomatoes. The seed sprouted on top and the roots grew along the top until they went down. The root then tries to turn to stem since it is above the soil. I think if you repot and bury them they should be fine.

  • 10 years ago

    My mother-in-law (an amazing gardener, who always has tons of tomatoes) just stopped by, and she agrees that the seeds were just too shallow. She pointed out that you can see the seed case at the point where the stem suddenly turns upward and gets stouter. I think it's exactly what hoosier said.

    As for varieties they are: Opalka Paste, Black Cherry, A Grappoli D'Inverno, Amish Paste and Bonny Best.