botanical expeditions

Cardamine bulbosa 'Snow Ruffles' winter growth

It’s Grow time for Cardamines

While most plants are going dormant in winter, others have a seemingly backward schedule. One of those is our native cardamines. Below is our garden clump of Cardamine bulbosa, which emerged in late November, and is growing happily as we hit the new year. This cabbage family (Brassicaceae) member, native from North Dakota south to

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Trochodendron arailoides

Driving the Wheel Tree Renaissance

One of our favorite evergreen trees is the little-known, Trochodendron aralioides. I first met the wheel tree at the JC Raulston Arboretum back in the 1980s, quickly falling in love with the fascinating foliage, which is arranged at the branch tips, like spokes on a wheel. As the curator of the Arboretum’s Lath House, I

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Microsorum buergerianum 'Datun'

Evergreen Fern Mat

We just snapped this photo of one of our more amazing fern introductions, Microsorum buergerianum ‘Datun’. This six year-old clump is from our 2008 spore collection of this fabulous mat forming, epiphytic fern from north of Taipei, Taiwan. Although the foliage burnt back at 11 degrees F, it re-flushed quickly the following spring. Hardiness Zone

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Arundinella hirta 'Cheju-Do'

Cheju Charmer

A few years ago, I was fascinated to see a catalog listing for a new ornamental grass that I didn’t know, Calamagrostis ‘Cheju-Do’. This struck my eye because calamagrostis are great ornamental specimens, and in 1997, I had the opportunity to botanize Korea’s southern island, Cheju. We subsequently acquired a specimen, which prospered for us,

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Liatris tenuifolia 'Jasper'

Slender-leaf Blazing Star

I first met the rarely-cultivated slender-leaf blazing star on a 2022 staff expedition with Patrick McMillan and Zac Hill, to Jasper County, SC. Here, Liatris tenuifolia grew throughout the dry, sandy habitat in between gopher tortoise mounds. The native range of this species, stretches from SC southwest to Mississippi. Our seeds from the expedition sprouted,

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