UNITED STATES—Floral color attracts pollinators. Hummingbirds mostly prefer bright red, pink and orange. Butterflies mostly prefer bright orange and yellow. Bees prefer bright blue and purple but are less discriminating than other pollinators. Of course, these are mere generalizations. Otherwise, the majority of pollinators might ignore species that bloom with white flowers.

Realistically, most flowers do not rely on pollinators for pollination. They rely exclusively on wind, so are just green or brown, and not visually prominent. These include flowers of grasses and conifers. Otherwise, small but prominently prolific white flowers are the next best option. They rely on either or both wind and pollinators for very effective pollination.

For example, firethorn bloom is very appealing to b

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