Tropicals & Tender Perennials: help with id of flower and care, 1 by plantladylin

plantladylin wrote:
Your plant looks like Epiphyllum oxypetalum: http://davesgarden.com/guides/pf/go/2443/

You might want to consider removing it from it's current container and take a look at the root system to see if it's possibly root bound, and re-pot in fresh medium in a larger container.

I grow mine in a chunky mix of Orchid Bark and potting soil and during the summer growing season I fertilize with a bloom booster orchid fertilizer. The buds will begin turning upwards before opening. This photo was taken August 23rd at 9 O'clock in the morning. By 10:30 that night the blooms were completely opened.