"The Gin and Tonic Gardener -Confessions of a Reformed Compulsive Gardener" by Janice Wells.
"The Gin and Tonic Gardener is designed for those of us who would rather enjoy our gardens than find ourselves enslaved by them. Weeds? Janice Wells exhorts us to have another gin and tonic: a stiff drink can actually help obscure, or at the very least, help you forget, those usurpers of the garden."
The only problem is I canna find a copy to buy- ABE & Bookfinder don't list any, and the few websites I can find it on (such as the one where I got this photo) are not actually selling the silly thing. Apparently it's a Canadian book. I'm sure that gods will be wanting a copy, so she'll probably figure out where to get them.