'Ibo nishiki' Japanese Maple 'Iceton Yellow' Garden Croton
Ichang Viburnum 'Icicle' Common Peach
'Idahoensis' Locust Idesia
'Idyllwild' Eastern Red Cedar Ilang Ilang
Illawarra Flame Tree Illawarra Palm
'Illinois Hardy' Japanese Zelkova Imodi Pine
'Imperial Blue' Cape Leadwort 'Imperial Green' Philodendron
'Imperial Red' Red-Leaf Philodendron 'Imperial' Thornless Honey Locust
'Imperialis' European Alder 'Inca Gold' Conebush
Incense Cedar (spp.) Incense Cedar 'Douglasii Pyramidalis'
Incense Cedar 'Emerald' Incense Cedar 'Excelsa'
Incense Cedar 'Fastigiata' Incense Cedar 'Zebrina'
Incienso 'Incisa' European Alder
'Incrediball®' Smooth Hydrangea: arborescens India Almond
India Date Palm India Palm
India Rubber Fig (spp.) India Rubber Fig 'Decora'
India Rubber Fig 'Doescheri' India Rubber Tree (spp.)
India Rubber Tree 'Decora' India Rubber Tree 'Doescheri'
Indian Azalea Indian Cigar (spp.)
Indian Cigar Golden Indian Cigar 'Pulveralenta'
Indian Hawthorn 'Clara' Indian Hawthorn 'Fascination'
Indian Hawthorn 'Olivia' Indian Horsechestnut (spp.)
Indian Horsechestnut 'Sydney Pearce' Indian Laurel 'Nitida'
Indian Lilac 'Indian Maiden' American Holly
Indian Mallow (spp.) Indian Mallow, Palmer's
Indian Mallow, Red Vein (spp.) Indian Mallow, Red Vein 'Gold Dust'
Indian Mallow, Red Vein 'Thompsonii' Indian Mulberry
Indian Rosewood 'Indian Summer' Rose
Indian Wild Pear Indica Azalea (spp.)
Indica Azalea 'Kate Arendall' 'Indigo' Benjamin Fig
Indigo Bush Indigo Bush: schottii
Indigo (spp.) Indigo 'Rose Carpet'
Indigo, Bastard Indigo, Chinese (spp.)
Indigo, Chinese White Indigo, Dwarf
Indigo, Himalayan Indigo: amblyantha
Indigo: kirilowii Indigo: nigrescens
Indigoberry, White 'Inermis Compacta' English Hawthorn: monogyna
'Ingrid Bergman' Rose Ink Bush
Inkberry Inkberry Holly (spp.)
Inkberry Holly 'Chamzin (Nordic™)' Inkberry Holly 'Compacta'
Inkberry Holly 'Densa' Inkberry Holly 'Ivory Queen'
Inkberry Holly 'Nigra' Inkberry Holly 'Red Tip'
Inkberry Holly 'Shamrock' Inkwood
Inland Coast Live Oak 'Innocence' Lemoine Mock Orange
'InSpired® Pink' Butterflybush: Buddleia 'InSpired® Violet' Butterflybush: Buddleia
'InSpired® White' Butterflybush: Buddleia 'Insularis' Oriental Sycamore
Interior Live Oak 'Intermedia' Japanese Yew: cuspidata
'Intertexta' Lawson's Cypress 'Intrigue' Rose
Invanaa Flat-top Acacia 'Invincibelle® Spirit' Smooth Hydrangea: arborescens
Iochroma Iochroma: grandiflora