Iris

Iron Weed

Jack-in-the-Pulpit

Japanese Spikenard

Joe Pye Weed

Juncus

Kniphofia

Lady's Mantle

Lamium 

Larkspur 

Lavender 

Lenten Rose

Leopard Plant

Leucanthemum

Lewisia

Liatris 

Ligularia

Lily of the Valley

Linum 

Lithodora

Little Blue Stem

Lobelia 

Louisiana Iris

Lungwort 

Lychnis