Archive for the ‘Non-native’ Category

Chartreuse In Summer Shade – ‘Sun King’ Aralia

Plants with golden foliage can brighten up almost any drab garden patch. Sun King golden aralia (Aralia cordata ‘Sun King’), called Japanese spikenard and mountain asparagus, is no exception (USDA hardiness zones 3-9). Under ideal conditions this thornless, rhizomatous, herbaceous perennial starts out slowly to reach 3-5 feet tall and wide in its third summer. […]

Native Hypericums

St. John’s Wort (Hypericum spp.) is a genus of about 400 species of annuals, perennials or shrubs which are noted for producing showy bright yellow flowers with a central mass of bright yellow stamens. Hordes of bee species love hypericum flowers. In midsummer, this U.S. native produces yellow flowers with distinctive clusters of puffball of stamens […]

Growing Tropical Hibiscus

Tropical Hibiscus(es) (Hibiscus rosa-sinensis) are a non-hardy group from southeast Asia. They require temperatures above 50°F year-round (USDA Plant Hardiness Zones 9–12) and will likely be injured at temps below 35°F. They are evergreen cousins of the very hardy deciduous shrub group —Althea (H. syriacus) and herbaceous perennial favorites like Rose Mallow (H. moscheutos) and […]

Tall Growing Daylilies

Tall daylilies (Hemerocallis altissima) are a group of late season fragrant daylilies that are native to southwest China, singled out for their tall 5-6 feet floral spikes. Blooms open in late afternoon and are classified as “nocturnal bloomers”. In spring, this deciduous perennial starts out with 2-feet tall grass-like foliage. In summer they produce tall flower spikes 4 – […]

Tall Stewartia

Tall Stewartia (Stewartia monadelpha) is a deciduous flowering shrub or multi-trunked small tree that grows 20-25 feet tall with a pyramidal framework when young. As the tree ages, horizontal branches open up more. Tall Stewartia is a native of Japan and is indigenous to cool mountain forests. Stewartias are members of the Theaceae botanical family which include […]

Vincas/Annual Periwinkle Thrive In Hot Summer Gardens

Annual vinca or periwinkle (Catharanthus roseus), aka Madagascar vincas, is a summer flowering annual popular in Southern and Midwest gardens (USDA hardiness zones 9-11). Before setting out spring transplants, wait until soils have warmed up and all threats of frost have passed. The arrival of summer heat and humidity is when vincas bloom heaviest. Vincas […]

Growing Ajuga

If you’re looking for an attractive perennial groundcover to quickly fill in small or large patches in your garden, you can’t go wrong with ajuga (Ajuga reptans), also called as carpet bugleweed. This creeping evergreen plant spreads quickly and thickly. Plant it on moderate slopes for erosion control. A vigorous clump should smother out weeds […]

Princess Flower (Tibouchina)

Princess Flower, aka glory bush (Tibouchina urvilleana) and the lesser-known T. grandifolia are evergreen tropical shrubs and small trees native to Brazil (zones 9-11). In zone 8 plants often dieback to the ground in winter and come back if winter temps remain above freezing.  In the U.S. tibouchinas are primarily treated as garden annuals in […]

Chinese Pistache – Great Yard / Street Tree

Chinese pistache tree (Pistachia chinensis) is a small to medium size 25–40-foot landscape tree, an ideal size for a yard or street tree. Chinese pistache is native to China, Taiwan and the Philippines (USDA hardiness zones 6-9). It is related to the edible pistache nut tree (Pistachia vera). (Botanical family: Anacardiaceae). Foliage consists of pinnate compound, […]

Mayapples

Mayapple (Podophyllum peltatum) is a native herbaceous perennial wildflower that forms dense mats. It is an early spring riser in the shade garden (USDA hardiness zones 3-8). Mayapples are exceptionally hardy woodland plants found in most of eastern North America and as far south as the State of Texas. They’re typically found in colonies in open woodlands, […]