California black oak phenology observation 2026-04-24
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California black oak is a deciduous, hardwood tree with a broad rounded crown. It is the largest mountain oak in the West. The trunk bark is dark and covered with small plates. The bright green leaves are distinctly six-lobed ending in one to four bristle-tipped teeth. The acorns mature in the second year. The nut is deeply set in the cup and the cup is covered with thin, flat and imbricate scales. Source: USDA Plants Database
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2026-04-24
