Doesn't seem likely that there is an unsafe amount unless there are some dangerous compounds in the garden waste you are throwing in the pot. If the waste is weeds drenched in some form of herbicide, then it's safety could come into question. But it's unlikely that you would be posting in this forum so we can assume any residues are benign.

I wouldn't drink it myself, but I'd serve it straight up to my plants, I think.

Wayne in the Adks.

Oh, that's good to hear. It's pretty thick and rich and disgusting. I got this bug in my ear last night before I fell asleep, that because I have it in a big tub, I might be fostering mosquitos!!! So this morning I watered it down and watered everything with it.

I don't think I'll be sipping it, either, but then, I also don't munch on the horse poop I throw into the beds. To each species his own, right? :)

Thanks.
Christine