I'm not sure how to answer your actual question, but if I were you and I had free lamb's quarters growing in my compost or elsewhere, I'd **eat them**!

Lamb's quarters are one of the tastiest weeds ever -- similar to spinach but even better in my opinion. Pinch the tops of the plants, about 4-8 leaves worth, wash gently, steam and serve with butter, salt and pepper. The plants will continue to grow and you can harvest the tops from them again and again all summer.

But if you don't like that idea, I hope you solve the problem another way.

What is the bin made of? I have large metal bins that were once dumpsters.

Turn the soil with a pitch fork so any growing vegetation is at the top of the bin.

At the end of every fall I do a controlled burn to wipe out plant life in the soil. It also adds lovely nutrients to the soil. (Dont use gasoline or chemicals, use a non toxic fuel such as wood pellets or tinder)

If the bins are plastic, Id suggest dumping them in a burn barrel or an area you burn without fear of the fire getting out of control.


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If burning is not an option, go to homedepot or lowes and ask for a grass seed that is known to choke out weeds. (such as zyosia grass ) the grass will choke out all of the nasty weeds and then you can continue to compost over it. (Make sure that when the grass dies you put a layer of straw down to keep the weeds from coming back)

As the grass kills off the weeds dump your compost on top of the grass so that it wont take all the nutrients out of your new freshly weedless compost. (Compost on top will force the grass to go dorment and eventually burn itself out)