The plant matter does not need to be dry to make green dragon. Its called Green dragon because in most cases its made from still green plant material, and a portion of chloro is transfered to the solvent, and it gains a green tint.
Dried / cured material already has most of the chloro gone. Dried material can be harder to filter as well.
It really only affects your potency goal - 1 oz of wet material vs 1 oz of dry, etc. Obviously 1 oz of dry material is a hell of a lot more than 1 oz of wet plant matter.
Thats the real fun of making green dragon, or butter - you never know exactly how much you are getting in the material.
I use about 4-5 oz of wet trim, stems, crap buds, etc to a fifth of Barcardi 151. I shoot for 1 liquid ounce to be about 3-5 gram dose. I never can get it that strong though. One bottle is about 28 shots - so one good party with 8-12 people and its practically done.
I just made butter with 48 ounces of butter to about 6.5 oz of trim, and it came out a tiny bit under powered. 1 good dose is about 6-7 grams of butter. Good for a brownie recipe, but a little too much butter to put on toast for me.
Also the chemical extraction process activates the THC in both green dragon and butter, you dont need to cook it all beyond your normal heating procedure for the the butter.