I found many of these worms in my soil. I grow vegetable in 5 gallon bucket. Yesterday I found many of this kind of worm in my bucket of soil. Are these worms good or bad for my plant. Would they come out of soil and worm up to my plants eat them?
It's very hard to tell when they are young like that.
What I usually do is ask the guys at bugguide.net. I take a picture of the grub (often with a coin or ruler next to it for scale), then grab a handful of soil, a few grubs and put them in a jar/container with some air holes. When they hatch out into adult bugs, more pictures (with a coin or ruler), and send it off to the bug guide people. It's free and the longest I've had to wait for identification is 4 minutes. Those guys are amazing!
Those are June bug grubs, probably you recently tilled that area? They will eat large holes in your potatos and carrots, but do next to no damage to anything else. On a positive side they are a sign that your soil is healthy and full of organics, just that it hasn't been worked in a long time, I started a new garden in a old hayfield last year that hadn't been tilled in 25 years or more, it was full of those grubs, but I had an amazing garden besides the damage to about 30% of the potatoes and carrots
What kind of plants are you growing? What is your climate like?
Many types of beetles have similar looking larvae to that one. June bugs, Japanese Beetles and many other look almost the same at that stage of development. I feed them all to the chickens when I come across them. I'm sure most are harmless but I can't just pass up free chicken food. It might be worth checking out what types of beetles are common in your area and then taking note of what they eat. If you're growing grapes, and you live in an area that gets lots of Japanese Beetle damage, you might decide to kill the grubs when you see them. You can also set a flock of chickens loose on freshly tilled ground to help knock down their population. Chickens are suck good grub hunters.