Archive for the ‘Perennials’ Category

Do Not Call Them “Weeds” Any Longer

            Some plants deserve more respect. Over the years several U.S. native species have been tamed or domesticated. Yet, they retain their common name “weed”. Four popular former “weeds” are: butterfly weed (Asclepias tuberosa) ironweed (Vernonia lettermannii ‘Iron Butterfly’), sneezeweed (Helenium autumnale), and Joe-Pye weed (Eupatorium spp.). Butterfly weed (Asclepias tuberosa) […]

Comparing Oriental Lilies To Asiatic Lilies

Both Asiatic and Oriental lilies (Lilium spp.) are popular lilies in U.S. gardens. Hybrid cultivars share traits of both species. Lilies grow in a wide variety of soil types and are not pH sensitive. They flower in full to part partial sun (5 hours minimum of sunlight).  Both prefer a well-drained soil and mulch to keep roots […]

Spice Up Dark Garden Spots With Heucherellas

              Here come the heucherellas (x Heucherella), also called “foamy bells”. Heucherellas are hybrids that result from crossing two U.S. native genera: foamflower (Tiarella spp.) and coral bell (Heuchera spp.). Terra Nova Nurseries, a wholesale grower in Oregon, were the first to develop these hybrids. They possess the awesome foliage from both species parents. One […]

Dreaded Japanese Beetles Are Back

In many areas of the Eastern U.S. Japanese beetles (JB) devastate the foliage, fruits and flowers of more than 300 plant species, particularly those in the rose family (Rosaceae). Adult beetles are approximately 3/8 inches in length with a dark metallic green head and metallic dark tan wings. In the soil JB grubs appear “C” […]

‘Silk Tassel’ Sedge Shimmers In Shady Gardens

‘Silk Tassel’ Japanese sedge (Carex morrowii var. temnolepis) is an ornamental sedge from Japan (USDA hardiness zones 5 to 9). It is grown in shady areas for its narrow, variegated foliage. It grows slowly as a dense, grass-like clump to 12 -15 inches high and up to 2 feet spread. Foliage bubbles up like a shimmering […]

Yarrows Come In Many Size And Colors

              Yarrow (Achillea millefolium) is a rhizomatous spreading perennial (USDA hardiness zones 3 to 9). The species originates from Europe and Asia and was introduced to America in colonial times. Today, yarrow is frequently seen naturalized along roadsides, fields, and gardens throughout the U. S. Yarrow has fern-like, aromatic, foliage. […]

Butterfly Weed – Long-lived Flowering Perennial That Nourish Monarchs

Milkweed (Asclepias tuberosa), aka butterfly weed, is a tuberous rooted perennial native in the Eastern and southern U.S. (USDA hardiness zones 3 to 9). It grows in dry/rocky open woodlands, prairies, farm fields, and along roadsides. Individual plants typically grow as a clump to 1- 3 feet high and 1 ½ feet wide. Unlike many of […]

Three Native Landscape Grasses To Try

These three native grasses are easy to establish in average, dry to medium moist, well-drained soils and in full sun. They tolerate a wide range of soils including dry rocky sites, and are exceptionally drought tolerant. Figure on 1 to 2 years for each to become fully established. Blue Lyme Grass (Leymus arenarus ‘Blue Dune’) is a vigorous spreading cool […]

Tips On Growing Delphiniums

  Modern day delphiniums (Delphinium spp.), also called larkspurs, are the result of 2 centuries of complex breeding efforts in Europe and U.S. Delphiniums are short-lived perennials, at their best for 2-3 years. They’re most attuned to the cool temperate climes of the northern U.S. Delphiniums belong in the Buttercup (Ranunculaceae) family (USDA hardiness zones […]

Hold In Confinement

Some plants are incredibly aggressive. Herbicides like Roundup™ won’t phase them. They often escape and take over other areas of your garden or neighborhood. Four notorious examples are ditch lilies (Hemerocallus fulva), swamp milkweed (Asclepias incarnata), Mexican petunia (Ruellia brittoniana), and pink evening primrose (Oenothera speciosa). You can grow these four weedy offenders in confinement. All will survive […]