Best tool (power or otherwise) to get rid of weeds/grass at the base of a curved wall

[bellinisurge]

My new strimmer (a Powerbase one) isn’t really good for that kind of finessing job. My old strimmer (and old Flymo) sacrificed many many metres of wire in attempts to do this (or any other job, frankly). It needs brute force and I’m happy to try that by hand but only if the tool is good enough.
Please suggest your tools for the job. Thanks

Salt. Buy a big pot of table salt from the supermarket and pour it over the plant. It will be dead in a few days and shouldn't re grow for around 6 months untill the salt is diluted and washed away by the rain.

Don't do it this near to plants you don't want to kill, or if the water from your patio runs straight in a boarder

A Japanese hori-hori knife is my go to for this kind of job.

www.niwaki.com/hori-hori-pro-everything-tool?gad_source=1&gad_campaignid=21521196895&gbraid=0AAAAAD44YwzW0GIJmNHPxTTv0W8vmVshG&gclid=Cj0KCQjwgIXCBhDBARIsAELC9ZjMdF_ib41q06mNLxmpRb06tDbSk424Wg_pDwWggETRMh7Zupq4MLMaAtSwEALw_wcB

Give them a big squirt of weedkiller. You need to kill the roots rather thank just get rid of the leaves.

Thanks. I tried salt. It just laughed back at me. I’m warming up to the Hori hori knife

Burn them. Or boil them. Weed burner, kettle of water, steam cleaner.

A weed burner. Hours of fun for a pyromaniac.

Don’t burn or use noxious weed killer. Bad for the insect ecosystem . Dig out with hori hori. Plant some pretty ground cover like Erigeron daisies which will spread and look lovely .

A weed burner. Hours of fun for a pyromaniac.
The burner will shrivel the roots as well as the leaves. Weeding (hori hori or whatever) will bring out annuals but I doubt it will do much against deep perennial roots in a tight spot like that.

Bad for the insect ecosystem
We're talking about a small crack between a brick wall and tarmac, I don't think applying a bit of heat here will cause the end of civilisation as we know it.