We have lots of bermuda and foxtail grass and I have begun solarizing in earnest this year to help keep things better until control.
For small, spot weed control, full strenth vinegar works as good as RoundUp. This works on tender leafed plants. I keep a spray bottle handy. Works good around rocks, brick pathways, etc. For serious weed control go to Solarization.
To try solarizing:
- Buy 4' x 50' rolls of CLEAR medium to heavy plastic (3-6 mil) at the hardware store. Anything larger is too cumbersome to work with.
- Thoroughly wet the area you want to rid of weeds, harmful bacteria, insect larva, etc. The deeper the ground is soaked the better.
- If you want to take the extra step of loosening up the soil, this is recommended, although I have not tried this yet.
- Unroll the plastic and lay it out flat. It's handy to have an extra person (if you can find one).
- Lay it on the area you want to solarize.
- Put something around the edges to hold it down. Anything handy, but the more you 'seal' the edges the better it works. I use old garden 2x2's from past tomato cages, etc.
- Go do something else for a week or until everything looks really dead under there. The more sun the area gets, the better. If you slide your hand under the plastic after a day or so, you can feel how hot it is under there.
- For thorough pasteurization of the soil, you can leave it on for 4-6 weeks. The best time to solarize soil is in the hot summer months of course. If it rains during this time, simply sweep off the puddles. Don't punch holes in plastic.