a few years back, a few friends and i went and raided one of their grandmas morning glory patches, ( i say patch b/c they were everywhere ) all different kinds, they all seemed to work, we just went with the hunter thompson ideal, eat a handful and see what happens, in the summer this patch had every color morning glory i've ever seen, and we tripped, i mean TRIPPED! i can't say how many we ate but how ever many fit into the hand of you average adult male, several hundred is my guess, we all were nauseous though, but what a ride!