Try it on one plant you are not particularly fond of. I dumped some water from an empty milk bottle I was rinsing out; the plant did not flourish.

A plant that I am not particularly fond of…. uh, maybe I could go over to your house to try this experiment :) I <3 all my plants

I think it would be fine, but I don’t know for sure. Bronners is 100% natural, so I think it should be harmless.. but I’d start with 1 plant first.

Without a test I wouldn’t do it. Biodegradable on your lawn or in the storm drain is different than a concentrated dose on a potted plant.

Not saying it would be harmful, I don’t know.

@TheOnlyNeffie 100% natural does not equal harmless. Salt is 100% natural, but I wouldn’t try pouring saltwater on your plants.

Also lead, mercury, uranium, hemlock, snake venom, etc. are all 100% natural.

We actually use a spray of Bonners soap on plant leaves to control certain insect pests.

@gorillapaws you’re absolutely right, of course. I guess I should have chosen my words better. I just know that dish soap is commonly used to prevent pests from nibbling on your plants, and I wouldn’t expect any of the base ingredients in Dr. Bronner’s soaps to be harmful. But I don’t know for certain, which is why I thought maybe trying it on one plant first would be best.

@Rememberme: Ok. Dig up and pot a dandelion. After it “takes,” try your gray water on it.

@stranger_in_a_strange_land, that’s good to know. The Japanese beetles have hit my rose bushes, and the treatment of choice is spraying with soapy water.

I would follow the plain and simple directions on the Dr. Bronner’s bottle :-)

@PandoraBoxx: My grandmother used to put on gloves and drop the Japanese beetles into a container of water and kerosine. Now you can use soap or vinegar and water. Around here, that would be several hours worth of picking. I share my roses (unhappily) with the beetles and the slugs.