microwaving (all part of studies to see what factors can enhance germination of old seeds) - and germination was fine. It would not surprise me if different types of seeds were killed at an array of temperatures.

Do report back on what you find!

You will need a weed burner, and a bit of room.

Spread out a layer of your compost (like a bed).
Water the hell out of it.
Cover it with plastic or landscape fabric (This will keep the moisture in and the light out).
Wait a week or two.
You are encouraging the weed seeds (in the top 2 inches) to germinate and begin to grow.
Uncover it and you should see a bunch of tiny weeds starting to grow.
Burn them with the weed burner.
You can repeat this after mixing the compost (to expose new seeds).

I use this technique on my beds as well as with compost.
There are definitely videos out there.

Cheers
Drifter

It is basically a propane torch in a form factor that makes burning weeds easy.

I have one like this:
https://www.drpower.com/productimages/image.axd/i.14997/w.515/h.515/small+weed+torch_r.jpg

In general it is safe, if you use common sense.

Cheers
Drifter

https://farmersfriendllc.com/products/weed-management

Cheers
Drifter

I was told the reason some potting soils were so much more expensive than others is they run it down a conveyor belt through a steam bath to kill weed seeds. Supersoil was a specific brand that did this, I think.

Sterilization depends on both heat and time. A couple more days and the compost will go under the marigolds and we’ll see if we grow weeds.

I have crab grass and I solarized 2 beds last winter. I should have done it earlier in the year, but I didn't and it really helped. I think that if I left it for a summer season, it would be perfect.

I’m not a vegetable gardener, I’m a flower gardener, so the beds contain perennials all the time. The container method does work, but turns out to be a lot of trouble for a tiny bit of sterilized compost.