Actually Wyldefyre, no you can't.
The Rangers guild have been allowed access to wurtfoil on the condition we do not distribute it outside the guild, in any form, to anyone. Even our friends, even if on negative rides.
Hell, I've even refused to pass it onto younger animists who can't evoke it as yet.
Just to clarify
Written by my hand on the 8th of Leaflost, in the year 1088.