You can make this weed killer at home. It is bleach mixed with dishwashing detergent. The dishwashing liquid makes it stick to the weeds. Don't be stingy. Apply it generously and in full sunlight. I mean really saturate the weeds and re-apply it a few hours later if you need to.

But I hesitate to label this as environmentally friendly or organic. I read on the Internet that bleach evaporates chlorine and leaves sodium deposits on the ground. But at least it doesn't have the toxicity of store-bought weed killer.

Don't use too much dishwashing liquid or you'll just end up with suds. And don't shake it up to mix. It could blow up in your face even if you open slowly to release pressure. Stir gently in a pail if you want and use in a well-ventilated area because of bleach fumes.

 

Hi,

perhaps it works to kill weed, but certainly it is not a green option.
I am moving this post to the gardening forums

 

The weeds that really challenge me are the ones that grow in the cracks in the cement and between landscaping pavers. This year I am trying to control them using a propane torch. it does work, though it takes patience and time to anhilate the weeds because they are green and do not burn readily.

For weeds in general:
In large areas I use the weed eater to cut them down before they seed. Then I moisten the soil and hoe the top one to two inches to detach the weeds. After that I mulch with flakes of hay. A flake is a 1-3 inch slice from a bail of hay, it is how the bail naturally breaks apart. I distrube the hay over the garden, making it thick enough to keep down the weeds.

Using hay keeps the soil moist and encourages biological activity which improves soil health. You might also find a robin or two will take up residence in the yard. There is a lot of good food under that hay for the birds.

In my flower beds I just have to use the mulch and then patiently take the time to pull out the weed sprouts in the early spring.

Weeding takes time, but if you are persistent you will have less weeds as time goes by and you eliminate them before they go to seed.

Enjoy.