Park Place Building Seattle,
20,000 72-cell Sedum plugs were used when this
new 10,000 square foot green roof was added in downtown Seattle. It
took only two days for the roofing crew to completely plant the
roof at a rate of two plugs per square foot.
[Etera® products used: Sedum
Park Place is a 21 story building in the heart of Seattle, WA.
This 10,000 square foot green roof was added in February 2009, when
the building was re-roofed.
After a two-week delay in the construction schedule, the 20,000,
72-cell sedum plugs arrived by the truckload ready to plant. A
crane was used to hoist pallet shippers filled with plants onto the
It took only two days for the roofing crew to completely plant
the roof at a rate of two plugs per square foot. The plugs were
planted into 4" of growing media. Six months post installation, the
plants were well established and filling in nicely.
The roof does not have a permanent irrigation system, but water
was provided with a hose and sprinkler during a few of the hottest
summer days on record for Seattle. Some varieties showed stress
prior to watering, but the plants were doing well considering the
long dry period and soaring temperatures.
Plant varieties: Top Left - Sedum hybridum 'Immergrunchen'; Top
Center - Sedum spurium 'Red Carpet'; Top Right - Sedum reflexum
'Blue Spruce'; Center - Sedum album 'Coral Carpet'. Other varieties
not shown here: Sedum floriferum 'Weihenstephaner Gold', Sedum
kamtschaticum 'Variegatum', Sedum spurium 'John Creech', Sedum
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Northwest Horticulture LLC