Never heard of such a thing. Why would the leechate be toxic once anaerobic? Plenty of people use anaerobic teas to good effect, can't see it killing anything.

Worst case is it will help the plants grow. I don't see it killing any plants.

You are going to make those weeds into something that you'd see on the scifi channel. Think Audrie 2. "Feed me Seymore". They will be weeds on steroids.

Try a Weed Hound, or look up the use of vinegar in killing weeds.

It worked! I left leachate closed up in a glass jar for about 3 days and then poured it on my weeds - buh bye. :)

"Quite often when we vermicompost, some amount of liquid drains to the bottom of our bins. If the bin has holes on the bottom, that liquid seeps out. Many people assume that this is "castings tea" and will collect it and use it on their plants. Some also add water occasionally to increase the amount of liquid that runs through the vermicomposting bin. Unfortunately, this liquid is not castings tea, but leachate. When a liquid seeps through a material containing decomposing organic matter, some of that organic matter is carried along in the water. When it leaves the system, carrying with it undecomposed organic matter, we call it leachate. Now, water does not allow enough Oxygen to diffuse into it to support aerobic microorganisms, and so anaerobic micororganisms are encouraged. These anaerobes produce some undesirable byproducts that are not good for plants. Our nose warns us of the presence of anaerobes' byproducts  anaerobic decomposition stinks!

Vermicompost, by its definition, contains some decomposing organics, some aerobically-decomposed organic matter, and vermicastings. The longer the worm bin remains aerobic and with a large population of redworms (or another composting species), the higher its content of worm castings will be. This is what we want our worm bins to produce. Castings tea is the liquid we create when we soak worm castings in water."
Source: http://www.wormdigest.org/index.php?option=com_content&task=view&id=60&Itemid=2

they might have died or died back temp. You can do the same thing with sodium nitrate fertilizer put on strong it will kill most plants but lookout when they come back as they will be back with a vengeance!

yes, check back with us in a few weeks and let us know how vigorous they're growing :)
you'll do better using some straight vinegar on weeds

Bill

Vinegar is the best organic weed and grass killer.

I was reading on Soil food Web (or some similar site) that worm bin leechate, if kept completely anerobic for a couple weeks, can kill plants.

It's one of those things I am skeptical of, but I never tried it so...

You still around Jennifer? Would love an update on those weeds.