I recently obtained some some cheap plastic succulent plants which I converted into cacti for my Wild west games. Full details and pictures are on the blog http://grahamsgaming.blogspot.co.uk/2018/01/wild-west-terrain.html
(https://farm5.staticflickr.com/4588/25666581318_30bf37f369.jpg) (https://flic.kr/p/F74Wq7) (https://flic.kr/p/F74Wq7)
Nice adaptation - looks wicked sharp!
They're a bit good!
Would go very well for the new tropical Frostgrave game...