Extensive Versus Intensive Green Roof

Emory Knoll Farms of Street, Maryland explains on their website the difference between an extensive green roof versus an intensive one.  The extensive uses plants with foliage of two to six inches, low-lying plants designed to provide maximum groundcover.  An...
Sedums at Cylburn Arboretum

Sedums at Cylburn Arboretum

A visit to Cylburn Arboretum in Baltimore, Maryland took us to the Worthley Garden, a garden full of sedums.  Scott Ritchie, the Acting Green House Supervisor, explained how he created its berms with sand, lime, gypsum and rock, a climate suitable for the cliff sedum,...

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