Should I be concerned?

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ChefDean

 
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Should I be concerned?

by ChefDean » Fri Sep 28, 2018 1:34 am

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I was looking at my Drosera seedlings and found this. I actually found two of them, both about the same size.
I have five little shooters with seedlings, all with LFS, but I could only see these worms in one, the one I plucked both worms out of. Both are about 1 mm long, 1.5 mm stretched out, and both seemed to be munching on the moss, not the seedlings.
Anyone know what they may be? Should I be concerned? Should I transplant all the delicate seedlings to new media?
Any info/ideas/advice/suggestions will be appreciated. 
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Shadowtski
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Re: Should I be concerned?

by Shadowtski » Fri Sep 28, 2018 1:39 am

They look like fungus gnat larvae.
The critters eat mostly dead and decaying organic matter, although occasionally they will attack the roots of young seedlings.
I don't worry about them unless I see all my seedlings in a state of collapse.

Just my two cents worth.

Good growing,
Mike

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ChefDean

 
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Re: Should I be concerned?

by ChefDean » Fri Sep 28, 2018 1:45 am

Thanks Mike.
I'll keep a good eye on the seedlings and move them if I have to, plus I'll watch the other shooters for invaders as well.
I appreciate all your help,
Chef
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KategoricalKarnivore

 
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Re: Should I be concerned?

by KategoricalKarnivore » Fri Sep 28, 2018 2:29 am

I agree. Fungus gnat larva and they will eat seedlings roots pretty fast from what I’ve seen. You can use mosquito dunks/bits in the water and it will kill them all off. It’s a bacteria and will not harm the plants.

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Re: Should I be concerned?

by Fieldofscreams » Fri Sep 28, 2018 12:35 pm

Yup fungus knat larva. They are pretty much harmless.

The only time I get rid of them is when they become so numerous that they become annoying.

What I do is I have a milk jug filled with water and few pieces of mosquito dunks in it. I just water with that a few times and that takes care of it for about a month or two.
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Re: Should I be concerned?

by ChefDean » Fri Sep 28, 2018 1:26 pm

Thank all for the advice.
I'm keeping an eye on them, and it seems that only one shooter is infested (from numerous, high magnification views). It does look like I have fewer seedlings, whether from them just not taking or being munched on, I don't know. Can I transplant the seedlings with minimal risk of transferring the larva? Or should I just take my medicine, eat my losses, and toss that shooter?
I will be getting some mosquito bits in the future, but it's just not in the budget right now.
Chef
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Re: Should I be concerned?

by Fieldofscreams » Fri Sep 28, 2018 3:16 pm

They are like $5 and you will get enough to last you decades.
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Re: Should I be concerned?

by ChefDean » Fri Sep 28, 2018 11:40 pm

I've been researching, and hydrogen peroxide is reported to kill the larva on contact. I've also read some posts where HP has been used on the seeds prior to sowing.
Does anyone know if I can use a dilute solution of HP and water now to try to control the larva without hurting the seedlings? Has this ever been done after germination? Anyone with any experience with dosing media and seedlings with a hydrogen peroxide solution for fungus gnat larva, or solid knowledge of, your 2 cents are welcome.
Chef
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