Michael Dirr
Michael Dirr
Recent Articles
Acer truncatum: Shantung, Shandong or purpleblow maple and hybrids
Acer truncatum trees and hybrids offer exceptional hardiness, vibrant fall color and adaptability — ideal for commercial nurseries and landscape projects.
Crimson evergreen
Michael Dirr provides another perspective on Photinia × fraseri, redtip photinia and related species.
Hydrangea hullaballoo
Name changes have added several genus to Hydrangeaceae. Here's why it matters to you.
Spiraea thunbergii
With time on your side, there are plenty of breeding opportunities with this species.
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