Tag Archives: robinia pseudoacacia

Black Locust Trees of JP

by sicloot Posted on June 2, 2013

Black locust trees (Robinia pseudoacacia) are an invasive species in Massachusetts, but it is difficult to dislike them this time of year, when the trees perfume the air with a jasmine-like scent. The trees can no longer be legally planted. Older trees can be found in yards, but most of these trees grow in minimally-maintained spaces.

Black Locust flowers: white
Black Locust flowers

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Last to Leaf Out

by sicloot Posted on April 21, 2012

Spring has arrived early this year. The lilacs are in bloom. And most of the trees at the Arnold Arboretum have either bloomed or started to leaf out.

Lilacs at the Arnold Arboretum
Lilacs blooming at the Arnold Arboretum

A few species still wait cautiously. Among those that have yet to wake:

  • Ailanthus altissima — Tree of Heaven
  • Albizia julibrissin — Silktree/Mimosa
  • Catalpa ovata — Chinese Catalpa
  • Fraxinus excelsior — European Ash
  • Gymnocladus dioica — Kentucky Coffeetree
  • Rhus chinensis — Chinese Sumac
  • Robinia pseudoacacia — Black Locust
View from the top of Peters Hill
View from the top of the Arboretum's Peters Hill
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