Palmer's penstemon is one of 250 species of penstemon that are common to the western and southern United States. The foliage of this perennial grows to 1 foot tall. The flower stems grows 4 to 6 feet tall, with large, light pink fragrant tubular flowers that attracts butterflies, hummingbirds and bees. Penstemon has a long blooming season, extending from June to October. Pruning Palmer penstemon aids in re-blooming and propagation.
Use gardening shears to remove spent flowers. This will encourage repeat blooming. If the faded blossoms are healthy, add to the compost.
Take cuttings from Palmer's penstemon during the mid-summer. Although a wide range of penstemons grow from seeds, they also grow well from cuttings that are overwintered in a greenhouse frame.
Prune the penstemons before the first freeze. Cut them completely to the ground. Use plant markers to avoid accidentally damaging them when digging the garden in the spring.
Cover the clumps with a layer of mulch. If mulch is not available, use decaying leaves.