How do kill grass and weeds coming up between cement sidewalk blocks?

Question

It looks bad having all those weeds and grass coming up between the sidewalk blocks. I have heard about using bleach or salt or dish soap. I don't want to hurt the grass on the lawn, though.

Doesn't anyone have any suggestions?

Answer 1

Go to Canadian Tire and buy a bottle of Killex.

Answer 2

Try vinegar

Answer 3

Put vinegar in a spray bottle and spot spray.

Answer 4

Simply spray w/a strong toxin of any kind u find at Home depot.

Answer 5

I went to the hardware store and purshased some grass and weed killer. It has that spray nozzle so you can keep the spray isolated from the areas that you don't want to kill. It works really well, with a clean and neat outcome.

Answer 6

get some round up (awesome stuff) and just douse the weeds and grass between the cracks...within the next day they should be brown and will not grow back until next season....make sure you spray enough to get all the way down to the roots.

Answer 7

they sell weed killer in the spray bottle at the hardware store there are many to choose from.

Answer 8

seven dust

Answer 9

DO NOT do anything that would prevent the blocks from moving. They expand and contract constantly, so if you prevent movement, they will crack and it would look even worse.

DO NOT use caulking, or cement. That just makes the sidewalk blocks crack, then the problem comes right back.

Try some boiling water. Make sure that you do so on a hot day so that the blocks don't crack.

For a temperairy job, if you have a Weed-whiper/Weed-hacker, then just use that to do it. Iff the sidewalk blocks are evenly spaced apart with at least 0.5cm of space, then that would work.

If the sidewalk blocks are tight against eachother, the only way that I see fit is to get on your hands and knees and start scrubing that dirt away. It takes a lot of work, but the results are great! Then, if you can find an edger [A machine that makes a small-ish gap between the sidewalk and grass] just take back the grass so that no dirt gets back for a long while. Doing it by hand, is better because you get more of a gap, then the time will be greater before you have to do it again.

Answer 10

Aside from commercially available weed killing products like Weed-B-Gon or Round-up spray-on liquid herbicides, there are other, more eco-friendly methods.

Simply use your hands, and/or a hand trowel or garden knife to dig out the offending weeds.

Use a propane torch to burn'em down.

Use strong concentration of vinegar (acetic acid) to kill'em.

Deny sunlight by covering growth with thick black plastic sheeting. No sunlight=no photosynthesis=no weeds will survive for long.

Temporarily remove the blocks then place a plastic sheet weed barrier down before re-setting the blocks on top.

That's all I got...

Good Luck!

Answer 11

Hit them with a good weed killer, removed the dessicated weed corpses, spray the cracks with water & let dry, then seal the cracks with some ready-mix concrete.

Answer 12

buy some feed and weed from your local gardening shop just cheap one will do. this is great as it is made for lawns so it feeds your grass but kills the weeds very safe for your grass. if you have a wilkinsons diy shop then go and ge5 there own brand... xx dont get an expensive brand as it is a waste of money.

Answer 13

first weed it, then caulk it