...this was the question of an eighth grader today at our middle school. From what I know, he/she asked the question of their science teacher during class. I overheard a follow-up conversation on the subject during choir. One person said the answer was yes, another thought trees were asexual. Not a tremendously surprising question for an eighth grader, but random nonetheless.
BTW, I think the teacher's answer was yes. (strange mental pictures!)