This doesn't mean that bees will purposely avoid red flowers, and the color certainly doesn't harm them. The downside to red flowers instead lies in their lack of attractiveness to bees. It's also worth noting that most other pollinating insects, like wasps, also cannot see the color red very well. All of this isn't to say that you shouldn't plant red flowers in your garden at all. In terms of color, bees are most likely to see those that are blue, violet, and purple.