Hamamelis mollis

Hamamelis mollis

Chinese Witch Hazel

Helleborus abchasicus

Helleborus abchasicus

Lenten Rose

Hesperocyparis bakeri

Hesperocyparis bakeri

Baker's Cypress, Modoc Cypress, Siskiyou Cypress

Hesperocyparis stephensonii

Hesperocyparis stephensonii

Cuyamaca Cypress

Hibiscus cannabinus

Hibiscus cannabinus

Brown Indianhemp, Kenaf

Hosta venusta

Hosta venusta

Plantain Lily

Hydrastis canadensis

Hydrastis canadensis

Golden Seal, Goldenseal

Hypericum patulum

Hypericum patulum

Goldencup St. Johnswort

Iberis sempervirens

Iberis sempervirens

Evergreen Candytuft

Ilex glabra

Ilex glabra

Appalachian Tea, Dye-leaves, Evergreen Winterberry, Gallberry, Ink Berry

Ilex longipes

Ilex longipes

Ilex mucronata

Ilex mucronata

Mountain Holly, Swamp Holly

Ilex opaca

Ilex opaca northern

Northern

American Holly, Northern American Holly

Ilex serrata

Ilex serrata

Finetooth Holly

Imperata cylindrica

Imperata cylindrica

Cogongrass

Iris crocea

Iris crocea

German Iris, Golden Flag

Iris domestica

Iris domestica

Iris germanica

Iris germanica

Bearded Iris, German Iris

Iris pseudacorus

Iris pseudacorus

Pale Yellow Iris, Yellow Flag

Jamesia americana

Jamesia americana

Fivepetal Cliffbush, Waxflower

Jubaea chilensis

Jubaea chilensis

Chile Cocopalm

Juglans californica

Juglans californica

California Black Walnut, California Walnut, Southern California Walnut

Juglans cinerea

Juglans cinerea

Butternut

Juglans cinerea

Juglans cinerea X Ailantifolia Var. Cordiformis

var. X Ailantifolia Var. Cordiformis

Buartnut

Juglans microcarpa

Juglans microcarpa

Little Walnut

Juglans regia

Juglans regia

English Walnut, Persian Walnut

Juglans regia

Juglans regia 'Carpathian'

'Carpathian'

Carpathian English Walnut

Juniperus deppeana

Juniperus deppeana

Alligator Juniper, Checkerbark Juniper

Juniperus horizontalis

Juniperus horizontalis

Creeping Juniper

Juniperus osteosperma

Juniperus osteosperma

Utah Juniper

Kerria japonica

Kerria japonica

Japanese Kerria, Japanese Rose

Keteleeria davidiana

Keteleeria davidiana

David's Keteleeria

Keteleeria evelyniana

Keteleeria evelyniana

Evelyn Keteleeria, Yunnan Youshan

Keteleeria fortunei

Keteleeria fortunei

Fortune's Keteleeria

Kniphofia uvaria

Kniphofia uvaria

Redhot Poker, Torch Lily

Lagerstroemia indica

Lagerstroemia indica

Crape Myrtle, Crapemyrtle

Larix laricina

Larix laricina

American Larch, Eastern Larch, Tamarack

Lathyrus tuberosus

Lathyrus tuberosus

Tuberous Sweetpea

Lavatera thuringiaca

Lavatera thuringiaca

Gay Mallow, Tree Lavatera, Tree Mallow

Leitneria floridana

Leitneria floridana

Corkwood

Leonotis nepetifolia

Leonotis nepetifolia

Christmas Candlestick, Klip Dagga, Lion's Ear

Lespedeza juncea

Lespedeza juncea var. sericea

var. sericea

Chinese Bush Clover, Chinese Lespedeza, Sericea , Sericea Lespedeza, Silky Bush Clover

Leucothoe fontanesiana

Leucothoe fontanesiana

Dog Hobble, Highland Doghobble

Leycesteria formosa

Leycesteria formosa

Flowering Nutmeg, Himalayan Honeysuckle, Himalayan Nutmeg, Pheasant Berry

Liatris spicata

Liatris spicata 'Kobold'

var. Kobold

Kobold Blazing Star, Kobold Spike Gayfeather

Ligustrum obtusifolium

Ligustrum obtusifolium

Border Privet, Regal Privet

Lilium superbum

Lilium superbum

Swamp Lily, Turk's Cap Lily, Turk's-cap Lily

Limnanthes douglasii

Limnanthes douglasii

Douglas' Meadowfoam, Poached Egg Flower

Lindera obtusiloba

Lindera obtusiloba

Japanese Spicebush

Liriope muscari

Liriope muscari

Big Blue Lilyturf, Lilyturf