I have never seen such prolific flowering as this year on my maples. I have scores of cultivars producing samaras right now on which I have never seen seeds. I am excited already about germinating these seeds. A learned acerologist friend told me that flowers produced following a rainy year(s) are mostly female; flowers following a dry year(s) male. Here in th Bay Area we had about 65-75% normal rain (dry year) but 2006 was very wet (130%+ of normal) so I believe this flowering & seed production is the result of the wet 2006 winter/spring. Also, I have noticed bees pollinizing the flowers. How else are Japanese maple flowers pollinized please? Would appreciate all feedback. Thanks.