This is Castilleja integra, also known as wholeleaf Indian paintbrush, and Squawfeather. This plant grows best in full sun where its brilliant red, crimson, and scarlet blossoms attract a wide variety of birds, bees, and butterflies. These drought tolerant plants grow about 1 foot tall and blossom from late Spring until early Fall. This is a larval host for the Fulvia Checkerspot butterfly. Castilleja in general are larval hosts for the Ediths Checkerspot, Theona Checkerspot, Leanira Checkerspot, and Black Checkerspot butterflies. USDA Hardiness Zones 4 to 7.