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USA National Phenology Network

The Redbud Phenology Project

Free Outdoors

Better understand the timing of flowering and fruiting of eastern redbud!

In a specific area

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  • Ongoing through December 31, 2025 at 7:00 AM
Citizen ScienceBiologyEcology & EnvironmentNature & Outdoorsdata collectionredbudfloweringobservationtreesseed podsseedsphenologyflowers
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USA National Phenology Network

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One of the most iconic native North American trees is the eastern redbud (Cercis canadensis). This tree is one of the earlier flowering forest trees in the spring. Because it is beautiful when in flower, it has become a widespread ornamental tree in the USA and elsewhere around the world.

We are interested in answering the following two questions: 1) When do eastern redbud trees flower and fruit across the tree’s range and how does the timing of these events vary with location (latitude and longitude) and elevation above sea level? 2) Has the timing of flowering and fruiting advanced in recent years?

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Ticket Required: No

Minimum Age: 13

Languages: English

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