What's the best way to remove dead weeds from cracks in concrete?
If this was my home, I would do the following to remove the eyesore and minimize the repeat of it happening in the future:


Remove what I could with a weed trimmer tipping it to get into the crack as much as possible.
Use a power washer or maybe a garden hose with a tight nozzle to clean out the cracks as much as possible.
After it has dried out, follow the methods listed in the following web page to open up the cracks some and fill with a concrete crack filler product.


https://www.quikrete.com/athome/video-repairing-sealing-cracks.asp