Pollination

https://www.youtube.com/watch?v=26oq5tWrb2Q

http://www.ehow.com/how_8133192_cross-pollinate-marigolds.html

http://forums.gardenweb.com/forums/load/seedsave/msg0720035023321.html

http://forums2.gardenweb.com/forums/load/annuals/msg0819105717905.html

http://www.thompson-morgan.com/f2-and-open-pollinated-varieties