Hello Linda,
Typically, you do not want to cover existing grout. You will need to remove the old grout and apply your new colored grout. A tile contractor can help you with this project. Please let ... read more
I would wait until the first frost, that very next day spray or paint leaves with Crossbow (if spraying isn't an option, as in beds with other plants or single shoots). The sap in the stems will draw ... read more