Perennials That Do Well With Walker's Low

Pink to Rose

• Dianthus or modern pinks (Dianthus plumaris) grow well with "Walker's Low," reports "The Telegraph." These perennials grow to 3 feet tall with an equal spread and bloom from spring to fall with fringed blossoms in a range of pink shades. Hardy in USDA zones 4 to 9, modern pinks thrive in sunny sites and grow well in rock gardens. For delicate, butterfly-shaped flowers that are much tougher than they look, plant gaura (Gaura spp.) with "Walker's Low." These perennial wildflowers grow to 6 feet tall and bloom from spring through fall. They grow in USDA zones 6 through 9 and tolerate drought and partial shade.

Purple and Blue

• "Walker's Low" Persian catmint grows well with "Pretty Petticoat" penstemon or beardtongue (Penstemon "Pretty Petticoat"). This 2-foot-tall and wide perennial blooms from summer through fall with spires of purple blooms, offset by white throats. "Pretty Petticoat" requires minimal water and grows in USDA zones 4 through 9. For complementary purple blossoms, plant autumn sage (Salvia greggii). This perennial blooms from early summer through late fall with purple, white or pink flowers and grows to 1 foot wide and tall. Growing in USDA zones 8 to 10, autumn sage attracts birds, bees and butterflies.

White and Yellow

• For a bright splash of yellow with your "Walker's Low," plant owlsclaw (Helenium hoopesii). A 12-inch-tall North American native, this perennial wildflower blooms with yellow, daisylike blossoms. It grows in USDA zones 5 through 10 and grows in partial sun to full sun. The aromatic, gray-green foliage of yarrow (Achillea milleflorum) complements "Walker's Low" Persian catmint. This sun-loving perennial grows to 24 inches tall and blooms with flat clusters of tiny, white flowers through the summer. Hardy in USDA zones 3 through 9, this drought-tolerant perennial also comes in colorful cultivars, such as the peach-blooming "Apricot Delight" and the pink-blooming "Summerwine" or "Rosacea."

Red and Orange

• For red and orange contrast next to your "Walker's Low," plant day lilies (Hemerocallis spp.). Varieties such as "King's Genius," "Elijah," "Jungle Fever" and "Brazilian Orange" bloom in late spring in warm climates and summer in cooler climates, producing large, single blossoms that last for only one day. Day lilies grow in USDA zones 3 through 10, depending on the cultivar, and grow to 3 feet tall. Though they tolerate drought, day lilies bloom best with regular watering. Bright orange-yellow flowers top the "Goldsturm" orange cone-flower (Rudbeckia fulgida var. sullivantii "Goldsturm"). This "Walker's Low" companion grows to 30 inches tall and blooms for up to two months in summer. It's hardy in USDA zones 3 through 9 and grows in full sun to partial shade.