Little worms in orchidarium
 

Hi
A week ago a spotted little worms on the wood in my Orchidarium ,see pics.What are these worms and how i remove them?
Greetings
Kristoff 391223-CA-E1-B9-4-CBC-8094-DA16-C39076-C9 — ImgBBhttps://ibb.co/nQTYZGS

Obviously the caterpillar-like larvae of some insect.

If you can find a Bacillus thuringiensis product, it should be effective and safe to use. They are mostly sold to rid lawns of grubs and ponds of mosquitoes.

I think I just found those in my oncidium!
Would it help only to repot?

Welcome to the Orchid Board!

If you repot you might miss some of them. I would use the Bacillus thuringensis (BT) treatment for caterpillars.

you remove them with tiny little tweezers . pluck em right out and you got some goldfish?

Since you only need a small amount, most mosquito dunks have Bacillus thuringensis in them. Can pick up just about anywhere.

I used Bacillus thuringiensis once but stopped out of fear harming my caterpillars on other plants. My small backyard is a mix of orchids, fruit trees, milkweeds for monarchs and other butterfly plants. If you use Bacillus thuringiensis product on one plant what is the chance it spread to other plant you did not directly sprayed? Any info?

Then original question is about a terrarium. BT on plants doesn't spread to other plants. It is true any caterpillars feeding on it will be killed. Many butterfly and moth species are selective about what they eat. Spraying BT on non-milkweed plants won't affect Monarch caterpillars, for example.

Bt-i works against mosquitoes and fungus gnats (diptera).
Bt-k works against caterpillars of moths and butterflies (lepidoptera).
I suspect that the soil creatures in the picture are symphylans, neither diptera nor lepidoptera.
Symphylans do eat plant roots. I have no idea how to get rid of them, but I don't think Bt will kill them.

I don't think they're symphylans... mostly because they don't appear to have antenna. Yeah, I was wrong about the mosquito dunks. Went down a rabbit hole trying to think of something Belgium might commonly have with Bt in it and lost track of the question. My bad.

Another strangeness here... the photo from OP was uploaded four years ago. Hmmmm.

---------- Post added at 08:08 AM ---------- Previous post was at 08:07 AM ----------

Obviously I was asleep at the wheel. :biggrin: