You don’t know Jack

Flowering now at JLBG is the handsome Jack tree, Sinojackia xylocarpa ‘La Grima’. Sinojackia, named after the late Arnold Arboretum staffer with three first names, John George Jack, is a Chinese native that is quite rare in the wild. In cultivation, this styrax relative matures at a compact 20′ tall. The cultivar ‘La Grima’ is

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