Arizona Upland/Eastern Sonoran Mountains

Texas barometer bush blooms in October

October 20, 2026

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is in open flower on October 18, with young leaves and flower buds present.¹ This evergreen shrub typically blooms after summer rains in response to moisture availability, and October flowering reflects the monsoon season's tail-end moisture combined with warm temperatures.¹

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1. USA National Phenology Network

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