Purple Zinnia – National Arboretum, Washington DC Yellow Daylily – National Arboretum, Washington DC "Twist-n-Shout" Hydrangea – National Arboretum, Wa… Crape Myrtle Flowers – National Arboretum, Washing… Yellow Vanda Orchid – National Arboretum, Washingt… Orange Marigold – National Arboretum, Washington D… Blooming Pearls – National Arboretum, Washington D… Banana Flower – National Arboretum, Washington DC Frangipani Flower – National Arboretum, Washington… Lindley's Butterfly Bush – National Arboretum, Was… Hosta plantaginea – National Arboretum, Washington… Formosa Pine #2 – National Arboretum, Washington D… Balloon Flower – National Arboretum, Washington DC Persian Silk Tree – National Arboretum, Washington… A Study in Orange – National Arboretum, Washington… "Lady in Red" Hydrangea – National Arboretum, Wash… Bonsai Ginkgo – National Arboretum, Washington DC Japanese Beetle – National Arboretum, Washington D… Windswept – National Arboretum, Washington DC The Green-eyed Monster – National Arboretum, Washi… Desert Willow – National Arboretum, Washington DC Bonsai Chinese Juniper – National Arboretum, Washi… Cicada-Killer Wasp – National Arboretum, Washingto… China Rose – National Arboretum, Washington DC The Other Side of the Ponderosa Pine – National Ar… Smokin' – National Arboretum, Washington DC Red Means "Stop" and Green Means "Go" – National A… Toffee-Nosed Kniphofia – National Arboretum, Washi… "Lavender Vista" Daylily – National Arboretum, Was… Rosa "Carefree Spirit" – National Arboretum, Washi… "Solar Flare" Orchid – National Arboretum, Washing… Peruvian Lily – National Arboretum, Washington DC Hollyhock and Company – National Arboretum, Washin… "Franz Schubert" Phlox – National Arboretum, Washi… Bonsai English Hawthorn – National Arboretum, Wash… Bonsai Bougainvillea Flowers – National Arboretum,… Crape Myrtle in Autumn #2 – National Arboretum, Wa… Orange Orchid – National Arboretum, Washington D.C… Bleeding Heart Vine – National Arboretum, Washingt… Upping the Ante – National Arboretum, Washington D… Crape Myrtle in Autumn #1 – National Arboretum, Wa… Patcharee Delight Orchids – National Arboretum, Wa… Japanese Cedar #1 – National Arboretum, Washington… Japanese Cedar #2 – National Arboretum, Washington… Horticulture for Klutzes – National Arboretum, Was… Amidst the Sheffied Pinks – National Arboretum, Wa… Mount Hood Orchid – National Arboretum, Washington… The Zither Player – National Arboretum, Washington… Bonsai Japanese Maple – National Arboretum, Washin… Bonsai Lantana Tree – National Arboretum, Washingt… White Spider Chrysanthemum Buds – National Arboret… Dwarf Hinoki Cypress – National Arboretum, Washing… Bonsai American Hornbeam – National Arboretum, Was… Formosa Pine #2 – National Arboretum, Washington D… Dwarf Japanese Garden Juniper – National Arboretum… Bonsai Chinese Juniper – National Arboretum, Washi… Formosa Pine #1 – National Arboretum, Washington D… Scrub Pine – Fern Valley, National Arboretum, Wash… Garden Phlox – Fern Valley, National Arboretum, Wa… White Oak, Red Leaves – National Arboretum, Washin… Between Heaven and Earth – National Arboretum, Was… Red Chokeberries – National Arboretum, Washington… Autumn Berries – Fern Valley, National Arboretum,… Chinese Trumpet Vine – National Arboretum, Washing… Seeing Spots – National Arboretum, Washington DC What's Upside Down Tiger Lily? – National Arboretu… Japanese Stone Lantern #3 – National Arboretum, Wa… Purple Zinnia, Brown Skipper – National Arboretum,… Old Capitol Columns #4 – National Arboretum, Washi… He Had High Hopes – National Arboretum, Washington… Leopard "Lily" – National Arboretum, Washington D… Eupatorium fortunei – National Arboretum, Washingt… Coreopsis "Red Shift" – National Arboretum, Washin… "Black Flamingo" – National Arboretum, Washington… Dancing on a "Moonbeam" – National Arboretum, Wash… Zephyranthes Rosea – National Arboretum, Washingto… Giant Hibiscus – National Arboretum, Washington D.… Rosa Mutabilis #1 – National Arboretum, Washington… Bonsai Japanese Yew – National Arboretum, Washingt… "Purple Dome" Aster – National Arboretum, Washingt… Rosa Mutabilis #2 – National Arboretum, Washington… Coreopsis "Sweet Dreams" – National Arboretum, Was… Purple and White Zinnia – National Arboretum, Wash… Walking Iris – National Arboretum, Washington DC "Sugi" Cypress – National Arboretum, Washington DC Japanese Maple – National Arboretum, Washington DC Bonsai Kurume Azalea – National Arboretum, Washing… Japanese Black Pine – National Arboretum, Washingt… Bonsai Red Maple – National Arboretum, Washington… Japanese Cedar – National Arboretum, Washington DC Lilac Explosion – National Arboretum, Washington D… Gilding the Lily – Ikebana Exhibition, National Ar… Japanese Stone Lantern #2 – National Arboretum, Wa… Bonsai Red Maple – National Arboretum, Washington… Tangentially Dreaming – National Arboretum, Washin… Cat's Cradle – Ikebana Exhibition, National Arbore… Bonsai Japanese Premna – National Arboretum, Washi… Allium Among the Tulips – National Arboretum, Wash… "Hozan" Bonzai Azaleas – National Arboretum, Washi… Cohabitation – National Arboretum, Washington DC "Homare" Bonzai Azaleas – National Arboretum, Wash… "Nikko" Bonzai Azaleas – National Arboretum, Washi… "Eikan" Bonzai Azaleas – National Arboretum, Washi… Taiwan Red Pine – National Arboretum, Washington D… 'Kinsei' Bonzai Azaleas – National Arboretum, Wash… Leatherleaf Mahonia – National Arboretum, Washingt… Laying Her Eggs – National Arboretum, Washington D… Tiny Hope Asian Lilies – National Arboretum, Washi… Japanese Maple – National Arboretum, Washington DC The Dogwood Days of Summer – National Arboretum, W… "Sky and Mist" Iris – National Arboretum, Washingt… "Ashton's Dawn" Iris – National Arboretum, Washing… "Bluebird" Hydrangea – National Arboretum, Washing… Rasberry Candy Daylily – National Arboretum, Washi… Lilies on the Rocks – National Arboretum, Washingt… Sunflower Burst – National Arboretum, Washington D… Rose Hip – National Arboretum, Washington DC Potinara Hoku Gem – National Arboretum, Washington… The Big Bang Theory – National Arboretum, Washingt… Keowee Newberry – National Arboretum, Washington D… Daffodils – National Arboretum, Washington DC Tulips Blowin' in the Wind – National Arboretum, W… Stargazer Lily – Ikebana Exhibition, National Arbo… Pink Magnolia – National Arboretum, Washington D.C… " ... Only God can make a tree" – The National Arb…