Dear All; After a quick Google of "Color preference of hummingbirds" it is inconclusive if they actually prefer red or not and if there are too many variables to make a determination: Apparently Hummers may give preference based on season, quality of food source, color, species of hummer and more. At least one species seems to prefer green while others seem to favor any in the red/orange/yellow range. One researcher says about half the literature says they prefer red and the other half say 'not so'. With over 150,000 hits on this topic, I can't say with any generality except that in my experience I see hummers (and we only have a single species here) favoring the bright, red, small-flowered cannas. Apparently other hummers in other situations don't. Duh. Best Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +