While salt is non-toxic to humans and animals, you will need to take a few precautions with this one. First, you will need to be careful when applying it to hardscapes and be sure to get it only in the cracks, since salt can corrode concrete and concrete pavers. Secondly, it is imperative that you do not use salt in areas where runoff could carry it to flowerbeds, a natural grass lawn, or other areas where you want to keep the soil healthy.
If you have not already stopped using products labeled as potential or likely carcinogens, such as glyphosate and 2,4-dichlorophenoxyacetic acid (aka 2,4-D), it may be time to do a little more research on the possible health effects of these weed killers before spraying them around your family and pets. A quick online search for health effects of commercial herbicides will likely turn rather quickly into a search for how to kill weeds naturally.
This natural weed killer is practically free, and you definitely already have it on hand. All you need is a stove, a pot, and some tap water. Or, better yet, if you happen to have a stovetop tea kettle or an electric kettle, this process will be even easier. All you need to do is boil water, and then pour it directly on unwanted weeds. You may have to do this more than once if you have weeds with deep tap roots, but it will eventually kill them off. Be sure to avoid pouring boiling water on desired plants, since this is an indiscriminate killer.
9. Using vodka in homemade weed killer.
If your main issue is weeds growing through cracks in your walkways, patio, or driveway, you may have the solution in your kitchen right now. Grab a box of baking soda, sprinkle it along cracks where weeds grow, then use a broom or deck brush to push it into the cracks. You will need to repeat this process after it rains or if you rinse down your hardscapes, since that will will dilute the baking soda.
You can also prevent weeds in established flowerbeds and borders by installing landscaping fabric around plants under wood chips or gravel.
Use ground covers and close plantings to compete with weeds for water, light and nutrients to crowd out undesirable plants. If it is an area where you do not plan on planting anything else, you can even plant a thug, which is a plant that will happily steal all of the light, nutrients and water from any plants around them – desirable or not – and take over the entire area. Thugs easily crowd out other plants and will readily overpower any weeds that dare grow near them.
Weed torches are actually a thing, and you can even purchase them online. But, before you get too excited, it is important to note that these backyard blow torches should not actually be used to burn weeds, since any vegetation dry enough to burn is probably not safe to burn. Instead, use your propane weed torch to wilt your weeds into submission. Obviously, you need to keep open flames far from desired plants, trees, your firewood storage area, anywhere with dry vegetation, your house, other structures, and anything flammable. Because of this, it is going to be best for most folks to try other natural weed control methods before turning to a blow torch.
These are amazing for treating large areas. Always read the label to find out which application method (watering can or sprayer) is suitable for the product you want to use. Do not walk across treated areas until dry, to avoid the transfer of products onto desired plants.
‘Topping’ the weeds with the hoe blade just below the soil surface avoid some of the backache and the weeds have to be picked up if you want the garden to look tidy. Hoeing the roots of perennial weeds often increases the problem and brings the seeds of annual weeds back to the surface. Less effective in wet weather, hoeing perennial weeds often increases the problem. Hoeing is best done on a warm day or a windy day, so the hoed weeds die quickly.
Weed by hand
As the name would suggest, this particular herbicide kills the above-ground subject that it comes in to contact with. Repetitive doses may need to be applied to fully kill the weed population. Usually, contact herbicides are classified as non-selective. Contact weedkillers work on contact with the leaves of the plant. They start to work as soon as they are applied to the plant. After as little as 10 minutes, some treatments are impervious to rain. They are fast-acting – the leaves turn yellow then brown and it’s all over in a few days. New plants can be planted or seeds are sown straight after the initial application has dried on the weed leaves, which can be as soon as 24 hours for some types of plant. Contact weedkillers are the perfect choice for killing annual weeds and ‘burning off’ the foliage of perennial weeds.
You’ve got it. Pre-emergence herbicides are the ones lurking out of sight. Apply weed killer in the fall to kill perennial weeds. Perennial weeds store energy in their roots in the fall before they go dormant in the winter. Spraying in the early fall will help prevent the plant from storing energy and re-emerging in the spring (best pop that on the calendar). Pre-emergence herbicides are mostly used to control annual grassy weeds and broadleaf weeds. It’s important to note that pre-emergence herbicides have no effect on weed seeds that have already germinated. The general rule is that pre-emergence herbicides are most effective about for six to twelve weeks. It’s also important to note that these weed killers can also kill grass seeds, so do not apply to lawns within two to four months prior to seeding and equally wait at least one month after seeding to use.
As the name would suggest, these herbicides are used to kill weeds that have already germinated. These weedkillers are most effective when the weed plants are in there early stages and before they’ve begun to produce seed(s).