NFT: To my bbi greenthumbs weed kill help needed

with the pool, there is some medium between the rocks where the weed seeds can get purchase. So, you can try re-doing the crevices between the rocks by digging out what is there and replacing it with a sand-cement mixture that won't host seeds (granted, a ton of work) or placing weed killer granules between the rocks early in the spring.

With the mulch bed, you don't say which of the invasive weeds it is so it could be (a) either the weed is spreading by means of rhizomes underground that you aren't getting when you pull the weeds or the plant has a natural waxy coating (like crab grass) that is resistant to spray weed killer. Try working granular weed killer into the soil as soon as the ground can be worked (weed and feed may work) or spray weed killer as soon as you see the weed poking out.

Also possible, depending on the weed, that the birds are spreading the seeds and re-seeding the ground after you have pulled everything up. If you have seed plants or cover nearby, that is a possibility too.

Good luck.

20% or 30%. It's available at Home Depot, Lowes, or from Amazon. It will kill grass, too, so careful application is advised. I've used it to kill on pavers, sidewalks, etc.

In comment 16477917 clatterbuck said:

Quote:

20% or 30%. It's available at Home Depot, Lowes, or from Amazon. It will kill grass, too, so careful application is advised. I've used it to kill on pavers, sidewalks, etc.

Add the following to the gallon of 30% vinegar to make it more potent: 1 cup salt, 1 cup lemon juice, 1 tablespoon of dish soap. Been using this formula for a couple of years and it quickly kills what green plant it touches. Be careful to avoid drops on the lawn and other desired plants.

In comment 16477915 HomerJones45 said:

Quote:

with the pool, there is some medium between the rocks where the weed seeds can get purchase. So, you can try re-doing the crevices between the rocks by digging out what is there and replacing it with a sand-cement mixture that won't host seeds (granted, a ton of work) or placing weed killer granules between the rocks early in the spring. With the mulch bed, you don't say which of the invasive weeds it is so it could be (a) either the weed is spreading by means of rhizomes underground that you aren't getting when you pull the weeds or the plant has a natural waxy coating (like crab grass) that is resistant to spray weed killer. Try working granular weed killer into the soil as soon as the ground can be worked (weed and feed may work) or spray weed killer as soon as you see the weed poking out. Also possible, depending on the weed, that the birds are spreading the seeds and re-seeding the ground after you have pulled everything up. If you have seed plants or cover nearby, that is a possibility too. Good luck.

This is the best bet. It's called polymetric sand. You brush it in and its water activated to expand. It's not perfect but I do it once a year and it is 95% effective. Once every 2 or 3 weeks you can walk around and pull the very few that come up by hand.

The only issue is that you are next to a pool so you would have to do it really carefully to avoid getting that stuff into your filter. It's sand and glue.

in the area that you described..

Purchase a heavy duty (thick mm) weed blocker. Most of them suck but there are a few that actually work.

remove your mulch and lay it down. Remove those rocks around the pool and do the same.

Then, if possible in the flower beds I would go back with stone instead of mulch. If you do go with mulch, then make it a thin layer.

i love yardwork but weeding not so much