Plant Growing Guides

Interior Douglas-fir

Pseudotsuga menziesii var. glauca

Intermediate Wheatgrass

Thinopyrum intermedium

Interrupted Fern

Osmunda claytoniana

Inula

Inula helenium

Invicta Gooseberry

Ribes uva-crispa 'Invicta'

Invincibelle Spirit Hydrangea

Hydrangea arborescens 'Invincibelle Spirit'

Invincible Hosta

Hosta 'Invincible'

Blackie Sweet Potato Vine

Ipomoea batatas 'Blackie'

Iris

Iris spp.

Iris Batik

Iris × germanica 'Batik'

Irish Molly Sedum

Sedum 'Irish Molly'

Iris orchioides

Iris orchioides

Yellow Iris

Iris pseudacorus

Harmony Dwarf Iris

Iris pumila 'Harmony'

Reticulata Iris

Iris reticulata

Iris reticulata 'Katharine Hodgkin'

Iris reticulata 'Katharine Hodgkin'

Bristle-pointed Iris

Iris setosa

Siberian Blue Iris

Iris sibirica 'Blue'

Virginia Iris

Iris virginica

Ironweed

Vernonia noveboracensis

Ironwood

Ostrya virginiana

Isabellinus Lily

Lilium isabellinum

Woad

Isatis tinctoria

Isopyrum

Isopyrum biternatum

Mouse-tail Moss

Isothecium myosuroides

Italian Dark Leaf Basil

Ocimum basilicum var. basilicum

Italian Flat-Leaf Parsley

Petroselinum crispum var. neapolitanum

Italian Giant

Ocimum basilicum 'Italian Giant'

Italiano Classico Basil

Ocimum basilicum 'Italiano Classico'

Italian Oyster Mushroom

Pleurotus ostreatus var. sapidus

Italian Parsley

Petroselinum crispum var. neapolitanum

Italian Raab

Brassica rapa subsp. turnips

Italian Ryegrass

Lolium multiflorum

Italian Rye Grass 'Westerwolds'

Lolium multiflorum var. Westerwolds

Italian Turnip Greens

Brassica rapa subsp. rapa

Ivory Halo Dogwood

Cornus alba 'Ivory Halo'

Ivory Silk Tree Lilac

Syringa reticulata subsp. reticulata 'Ivory Silk'

Ivory Tower

Echinacea purpurea 'Ivory Tower'

Ivy and Trailing Succulents

Hedera spp., Sedum spp., Echeveria spp., and related genera

Jack-in-the-Pulpit

Arisaema triphyllum

Jacob's Ladder

Polemonium caeruleum

Jade Cascade Hosta

Hosta 'Jade Cascade'

Jade Green Sedum

Sedum jacobense 'Jade Green'

Jimsonweed

Datura stramonium

Janie Deep Orange

Tagetes patula

Janie Pink

Tagetes patula 'Janie Pink'

Janie Primrose

Primula × polyantha 'Janie'

January Sun

Capsicum annuum 'January Sun'