Botanical thermometers

by William (Ned) Friedman, Director of the Arnold Arboretum
March 9, 2019

The ultimate early bloomer

by Jon Hetman, Director of External Relations & Communications
March 23, 2018

The ultimate early bloomer

Arnold Promise witch hazel

An interesting byproduct of planting related species side by side is that pollinating insects can become unwitting hybridizers. Such was certainly the case with one of the Arboretum’s most famous introductions, Hamamelis × intermedia ‘Arnold Promise’. A beautiful and vigorous witch hazel, ‘Arnold Promise’ was named to honor the place where it began, a happy […]

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Hamamelis intermedia, Arnold Promise, 1991

by Larissa Glasser, Library Assistant
April 6, 2017

Hamamelis intermedia, Arnold Promise, 1991

Hamamelis intermedia, Arnold Promise, 1991

Hamamelis intermedia, Arnold Promise, 1991 Photograph by István Racz and Zsolt Debreczy (n.d.), Hungary Arnold Arboretum, Jamaica Plain, Massachusetts, United States March 17, 1991 István Racz and Zsolt Debreczy are world-renowned denrologists with a long and storied association with Arnold Arboretum. They are authors of Conifers around the world : conifers of the temperate zones […]

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