Bees can’t see red. They don’t have that color receptor. Human color receptors are based on red, blue and green. Bee’s receptors are based differently – on ultraviolet light. That is blue and green. So, red flowers appear black to bees. How interesting to learn about the eyes of bees, especially since I’ve been told my other flying favorite, the hummingbird, favors red flowers.
I’ve always loved blue flowers. I didn’t know the bees did too. A dive into Bee Culture: The Magazine of American Beekeeping explains all about how bees see. Petals are a different color than leaves for the purpose of attracting pollinators and, surprise to me, many patterns in nature are invisible to us. Even though many gardeners love blue flowers, the truth is blue recedes in our vision. Yellows and reds pop out to us.
To help our most important pollinators it’s worth incorporating blues from spring to fall. Again an article in Bee Culture leads us through the season with appropriate blues.
In spring plant Siberian squill, Pulmonaria, Grape hyacinth and Forget-me-not.
In summer make sure you have hydrangea, cornflower, bachelor button, meadow sage, cat mint, Russian sage, veronica and speedwell.
Of course there are many more bee-friendly flowers to consider. Blues delight our eyes and feed the bees. In turn the bees make it possible for us to eat almonds, apples, blueberries, cherries, avocados, cucumbers, onions, grapefruit, oranges and pumpkins just to name a few. We get the best of that trade off.