This is an Earl of Chester Orchid I took at Selby Gardens.  I love the iridescence of the petals and all the water droplets.  The out of focus leaves create a nice pattern in the background.  

The orchid below is a Pearl Harbor Orchid that I also took at Selby Gardens.  The golds are beautiful against the rich mauves and I love the pattern created by the other slipper orchids in the background.

This photograph of two purple tiger orchids is one of my favorites.  The petals sparkle and glisten so much they seem almost sugar coated.  I liked the juxtaposition of the foreground and background flowers and the way the branches arch and cross one another.  I bought this plant as a gift for someone but had to photograph it first because it was so spectacular.