Alnus rhombifolia

Alnus rhombifolia

white alder



  • Fast growing deciduous tree reaching 20 feet the first year then slower growing the following years
  • Native to moist coastal areas
  • Will grow in wetter areas where other plants can’t grow
  • Other natives have a difficult time competing under these trees because they are very dense.
  • Thinning may be required
  • Found in Bay Hills, Diablo, Hamilton and Valley sections

Mt. Diablo North


1 gallon, 5 gal long

pollinators Bees
pollinators Butterflies
features Cones
bloom season Feb
sun Full Sun
water High
flower color Inconspicuous
bloom season Mar
water Mod
sun Part Shade
soil Poor
habitat Riparian
soil Wetland
dormancy winter

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