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Green Roof Plants

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Denver Botanic Gardens' Green Roof, built in November 2007, is the first green roof on a city-owned building in Denver. Designed to be publicly accessible, interpretive and educational, it demonstrates the many benefits of green roofs to communities and the environment.

Species data is collected annually to determine their suitability for green roof use along the Front Range. Plant taxa on the Green Roof are selected for characteristics such as rate of establishment, environmental tolerances, commercial availability, aesthetic value and potential to add wildlife habitat.

Green Roof irrigation is recorded each year. Since 2011, the irrigation system has been activated after July 1. Annual irrigation totals include:

  • 2017: did not irrigate (Precipitation 13.08 inches)
  • 2016: 8 inches (Precip 12.86 inches)
  • 2015: did not irrigate (Precip 29.01 inches)
  • 2014: 1 inch (Precip 17.51 inches)
  • 2013: 2 inches (Precip 19.3 inches)
  • 2012: 8 inches (Precip 12.73 inches)
  • 2011: 3.5 inches (Precip 22.04 inches)
  • 2010: 8 inches (Precip 12.45 inches).

    In 2007-2009, establishment watering of approximately 4 to 6 inches per month took place throughout the growing season.



  • Acantholimon armenum (Prickly Thrift)

    20% survival
    Planted in 2008

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    Acantholimon litvinovii (Prickly Thrift)

    100% survival
    Planted in 2008

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    Agave havardiana (Havard Agave)

    100% survival
    Planted in 2014

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    Agave parryi (Mescal)

    100% survival
    Planted in 2008

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    Amorpha nana (Dwarf False Indigo)

    100% survival
    Planted in 2009

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    Andropogon ternarius (Split Bluestem)

    100% survival
    Planted in 2012

     

    Andropogon virginicus (Broom Sedge)

    100% survival
    Planted in 2012

     

    Arctostaphylos 'Lauren’s Best'

    100% survival
    Planted in 2007

     

    Arctostaphylos patula (Green-Leaf Manzanita)

    100% survival
    Planted in 2007

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    Arctostaphylos × coloradensis 'Cascade' (Bearberry)

    100% survival
    Planted in 2007

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    Atriplex confertifolia (Shadscale Saltbush)

    33% survival
    Planted in 2010

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    Cercocarpus breviflorus (Hairy Mountain Mahogany)

    100% survival
    Planted in 2007

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    Chamaebatiaria millefolium (Fernbush)

    100% survival
    Planted in 2007

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    Chilopsis linearis (Desert Willow)

    100% survival
    Planted in 2007

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    Chrysanthemum weyrichii (Chrysanthemum)

    100% survival
    Planted in 2007

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    Cotula hispida (Silver Cotula)

    66% survival
    Planted in 2010

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    Cytisus purgans SPANISH GOLD® (Broom)

    33% survival
    Planted in 2007

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    Delosperma cooperi (Ice Plant)

    100% survival
    Planted in 2007

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    Delosperma nubigenum (Hardy Ice Plant)

    100% survival
    Planted in 2007

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    Dianthus anatolicus (Dianthus)

    39% survival
    Planted in 2008

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    Draba hispanica (Nailwort)

    100% survival
    Planted in 2007

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    Echinocereus fendleri (Fendler Hedgehog Cactus)

    100% survival
    Planted in 2009

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    Echinocereus triglochidiatus ssp. triglochidiatus (Kingcup Cactus)

    44% survival
    Planted in 2007

     

    Echinocereus triglochidiatus white sands strain (Kingcup Cactus)

    100% survival
    Planted in 2007

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    Echinocereus viridiflorus (Hedgehog Cactus)

    73% survival
    Planted in 2007

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    Echium russicum compact form (Red Feathers)

    100% survival
    Planted in 2007

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    Ephedra sp. (canutillo)

    83% survival
    Planted in 2010

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    Ericameria nauseosa ssp. nauseosa var. nauseosa (Rubber Rabbitbrush)

    100% survival
    Planted in 2007

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    Erigeron compositus (Fernleaf Fleabane)

    100% survival
    Planted in 2011

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    Eriogonum umbellatum var. aureum (Sulfur Flower Buckwheat)

    50% survival
    Planted in 2007

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    Eriogonum umbellatum var. aureum 'Psdowns' KANNAH CREEK® (Sulphur Flower Buckwheat)

    60% survival
    Planted in 2007

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    Escobaria missouriensis (Missouri Foxtail Cactus)

    50% survival
    Planted in 2007

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    Escobaria vivipara (Spinystar)

    45% survival
    Planted in 2007

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    Euonymus nanus (Burning Bush)

    100% survival
    Planted in 2007

     

    Genista tinctoria 'Royal Gold' (Dyer's Greenweed)

    Planted in 2014

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    Hesperaloe parviflora (Red Yucca)

    100% survival
    Planted in 2008

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    Hypericum olympicum (Mount Olympus St John's Wort)

    100% survival
    Planted in 2011

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    Ipomopsis aggregata (Scarlet Gilia)

    100% survival
    Planted in 2010

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    Iris × germanica (Bearded Iris)

    100% survival
    Planted in 2007

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    Muhlenbergia emersleyi 'Lenim' El Toro™ (Bull Grass)

    100% survival
    Planted in 2012

     

    Muhlenbergia montana (Mountain Muhly)

    100% survival
    Planted in 2012

     

    Nolina microcarpa (Sacahuista)

    100% survival
    Planted in 2007

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    Opuntia aurea (Golden Prickly Pear)

    100% survival
    Planted in 2007

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    Opuntia phaeacantha (Tulip Prickly Pear)

    100% survival
    Planted in 2007

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    Opuntia polyacantha (Plains Prickly Pear)

    100% survival
    Planted in 2007

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    Panicum virgatum (Switch Grass)

    100% survival
    Planted in 2007

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    Pediocactus simpsonii (Snowball Cactus)

    50% survival
    Planted in 2007

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    Penstemon pinifolius (Pineleaf Penstemon)

    100% survival
    Planted in 2007

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    Phedimus kamtschaticus (Kamschatka Sedum)

    100% survival
    Planted in 2007

     

    Phemeranthus calycinus (Largeflower Fameflower)

    100% survival
    Planted in 2011

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    Phlox bifida 'Betty Blake' (Sand Phlox)

    100% survival
    Planted in 2007

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    Physaria bellii (Front Range Twinpod)

    100% survival
    Planted in 2007

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    Salvia greggii (Autumn Sage)

    100% survival
    Planted in 2008

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    Salvia pachyphylla (Rose Sage)

    20% survival
    Planted in 2007

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    Sedum lanceolatum (Spearleaf Stonecrop)

    100% survival
    Planted in 2007

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    Silene schafta (Autumn Catchfly)

    50% survival
    Planted in 2010

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    Thelesperma ambiguum (Colorado Greenthread)

    100% survival
    Planted in 2007

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    Thymus neiceffi (Juniper Leaf Thyme)

    100% survival
    Planted in 2007

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    Veronica liwanensis (Turkish Veronica)

    100% survival
    Planted in 2007

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    Veronica thymoides

    100% survival
    Planted in 2007

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