Ice Plant

Ironweed

Iris

Jack-in-the-Pulpit

Jacob's Ladder

Kniphofia

Lady's Mantle

Lamb’s Ear

Lamium 

Larkspur 

Lavandula / Lavender 

Lenten Rose

Leopard Plant
Leucanthemum

Lewisia

Liatris 

Ligularia

Lily of the Valley 

Lithodora

Little Blue Stem

Lobelia 

Lungwort 

Lychnis