Round up from Home Depot is probably not the concentrated version you want.

You want at least 41% Glyphosate - there are several types - here is one:







Roundup 41% Concentrate, 2.5 Gal
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Price Range:
$173.00 - $190.00
Faster uptake of Roundup into the weed. Rainfast in 2 hours, will not wash off, more killing power into the root. Use in and around fences, trees, driveways, flower beds, walkways, shrubs, lawn renovation, and vegetable... More [/align]Faster uptake of Roundup into the weed. Rainfast in 2 hours, will not wash off, more killing power into the root. Use in and around fences, trees, driveways, flower beds, walkways, shrubs, lawn renovation, and vegetable garden preparation. Mix 1.5 to 2.5ounce per gallon. One quart makes 21 gallons of spray. Contains: 41% ISO Propylamine salt of glyphosate. Minimize [/align]



You can search Google and get alot of info on Roundup and Roundup ready crops.

FH