I've used Sap Green for many years and I love it. It is not a subtle green and mixed with dioxazine violet makes a fabulous dark or with aureolin yellow makes a stunning lime green. It really packs a punch and is a much more realistic green than Hooker's green, which is difficult to use in realism. Sap Green is not as subtle as olive green, which I use for florals as well, but each has it's own uses. I can never be without Sap Green.