James Freyr wrote:The vinegar trick does work, and I'll share my experience using it. I have used not grocery store vinegar but 10% and 15% acetic acid vinegars, with a little dish soap as a surfactant. It works, it's non-selective, burning most everything it contacts. "weeds" tend to die, grasses on the other hand seem to relentlessly recover, requiring regular reapplication during the warm months. I have come across in the past a few things that seemed to have a particular sort of waxy leaf surface, and my vinegar spray just beaded up and rolled off the leaves. It seems to work best when applied late morning on a bright sunny day having a full afternoon to wither and dehydrate.
Chris Kott wrote:Depending on the area, I might suggest a weed torch. You literally burn the plant at emergence. Only the isolated gravel intruder suffers.
Bryant RedHawk wrote:If you just want the gravel area to always be gravel, there is an option that even though it sounds really drastic, does work and the side effects do go away with applications of water (rain).
The material is easy to find at almost any hardware store, it is called muriatic acid (hydrochloric acid in the lab), the most common layman use of this acid is brick cleaning of excess mortar, it is a very low pH acid and the bottle concentration needs to be 1:1 diluted (acid into water not water into acid) if you use it on gravel drives for "weed" control.
By the way that goose grass will die and remain dead.
I have resorted to this particular acid two times on our gravel drive to kill the roots of sumac trees.
If you decide to try this, be sure to leave around a 1 foot margin on the drive, this helps keep the grass (or other plants) healthy since there is a buffer zone border.
Diane Emerson wrote:
I have not heard of this before, Redhawk. Muriatic (Hydrochloric) acid vs Acetic acid: Is it the concentration that works better than the 30% acetic acid (horticultural vinegar), or is there something about hydrochloric vs acetic acid in general that makes it work better?
Joseph Lofthouse wrote:The gravel parking area that I maintain is about 6" deep of one size of gravel. Therefore it doesn't compact. And it's on the top of a hill, so organic matter doesn't accumulate on it. I only till the top inch. Just enough to break off the plants. I could maintain it by hoeing. That's rather against the zeitgeist of our age -- using chemicals, propane, or machines to do what can easily and joyfully be done by manual labor.
Diane Emerson wrote: One option I have not tried, but am going to, is the use of heavy cotton canvas laid out over a portion of the gravel driveway for several weeks in the driest part of the year. Lightly covered with pea gravel for camouflage, this will kill the weeds, and once that patch is weed-free, the canvas can be moved to another part of the driveway. Plastic tarps are too colorful, and too shiny, to blend in with the driveway. The light gray color canvas is the right color for the gravel in our area, and there is no plastic used. One of my clients is keeping her gravel driveway weed free using this method, but she is using a plastic tarp, and it looks awful.
Henry Jabel wrote:I vote for more gravel. Of all my customers the drives with 6" of gravel hardly needs any weeding, compared to others which need reweeding every month or so during the growing season. By the time you factor in your time and money buying and applying spray etc several times a year in the long run more gravel is really the sensible option.
Personally I find the flame weeding rather slow and while the vinegar does work it is less effective when it rains, which can happen almost any time in England!
Julie Reed wrote:Holy cow Diane! That’s some expensive gravel! From your numbers, that’s just over 40 yards. Maybe in your area it costs that much, but 3/4 minus is usually around $10/yd, which would be $400 for the gravel itself. I realize you have delivery, raking and compacting, but that’s still not much trucking (4 trips) and labor (1/2 day maybe?) for the additional $2600. Might be worth getting a second price?