Archives: Plants

Viburnum opulus (European cranberrybush, guelder rose) is a hardy, deciduous shrub valued for its three-season display and wildlife appeal. Typically 8–15 ft (2.5–4.5 m) tall and wide, it forms a dense, multi-stemmed outline with trifid, maple-like leaves that flush fresh green, color to burgundy-red in autumn, and drop in winter. In late spring, flattened, lacecap-style corymbs of white flowers appear; the showy sterile florets rim a center of fertile blooms adored by pollinators. By late summer, glossy clusters of translucent scarlet drupes follow, often persisting into winter and feeding birds. Native across Europe and into western Asia and North Africa, the species thrives along stream banks, in damp woods, fens, and hedgerows on moist, humus-rich soils. It tolerates periodic wetness better than drought and accepts a range of pH, including calcareous ground. Note that the popular cultivar ‘Roseum’ (“snowball tree”) bears spherical sterile inflorescences and does not set fruit. V. opulus is adaptable in gardens and amenable to pruning after bloom, making it a reliable choice for mixed borders, screens, and naturalistic plantings.

Acer platanoides, commonly known as Norway maple, is a large deciduous tree native to Europe and western Asia, widely planted and now naturalized in North America. It typically reaches 15–25 m (50–80 ft) tall with a broad, rounded crown and dense foliage. Leaves are 5–7 lobed, glossy dark green, exuding a milky sap from broken petioles—a useful ID trait. In early spring, clusters of yellow-green flowers appear before or as leaves emerge, attracting pollinators and leading to paired samaras with widely spread wings. The species tolerates compacted soils, urban pollution, and road salt, making it a common street and park tree. Fall color is usually clear yellow. Roots are shallow and can compete with turf and lift pavement. Outside its native range, especially in parts of the northeastern United States and Great Lakes, it can self-seed aggressively and displace native understory vegetation, so responsible management is advised. Numerous cultivars exist for form and foliage color, including purple-leaved selections, though many municipalities discourage new plantings where invasiveness is a concern.

Geranium sanguineum is a compact, rhizomatous perennial forming low mounds of finely divided, palmately lobed leaves that often flush crimson in autumn—hence the epithet “sanguineum.” From late spring into midsummer, abundant five-petaled flowers open vivid magenta to purplish pink, usually with darker veining and a pale eye, drawing bees and hoverflies. Plants reach 20–30 cm tall and 30–45 cm wide, weaving neatly among stones and edging for durable, noninvasive groundcover. Native to calcareous and rocky habitats, it thrives in well-drained, moderately fertile soils and shows notable drought tolerance once established. Compared with tender “geraniums” (Pelargonium), this true hardy geranium is frost-proof and reliably perennial. Foliage is semi-evergreen in mild winters, and clumps are typically unbothered by deer and rabbits. Minimal care—deadheading or a light shear after peak bloom—refreshes the plant and can prompt a lighter rebloom. Its tidy habit, seasonal leaf color, and resilience make it excellent for rock gardens, slopes, cottage borders, and coastal plantings.

Epilobium ciliatum is a hardy, herbaceous perennial in the evening primrose family, commonly found in moist, disturbed sites. It forms upright, slender stems 30–150 cm tall with lanceolate leaves that are finely toothed and often bear tiny ciliate hairs along the margins. Small, pale pink to whitish, four-petaled flowers with notched tips bloom from late spring into early fall, followed by long, slender capsules that split to release silky, wind-dispersed seeds. The species spreads readily by seed and can form loose colonies, occasionally rooting at lower nodes. It is excellent for naturalistic plantings, rain gardens, and habitat restoration where quick cover is desired, but it may self-seed aggressively in fertile, open ground. Pollinators such as small bees and hoverflies visit the flowers, and the plant tolerates a wide range of soils provided moisture is available. Outside its native range, it may behave weedy, so deadhead to prevent unwanted spread.

Trachycarpus fortunei is a hardy, single-stemmed fan palm prized for its ability to thrive in temperate climates. It forms a slender trunk clothed in persistent, fibrous leaf-bases that create a shaggy, brown “hemp” covering. The crown holds numerous palmate fronds, typically 50–75 cm across, with stiff, segmented leaf blades radiating like a wheel—hence the common name. Mature specimens reach 8–12 m (occasionally 15 m) with slow to moderate growth. It is dioecious, bearing separate male and female inflorescences in spring; female plants produce small, blue-black drupes. Native to montane regions of China and adjacent areas, it tolerates wind, cool summers, and significant winter cold compared with most palms. In cultivation it adapts to a wide range of well-drained soils, preferring regular moisture and bright light with some protection from desiccating winds. Suitable for coastal and urban settings, it also performs well in large containers where space or climate dictate, adding a tropical look well beyond typical palm-growing zones.

Ribes nigrum, commonly called blackcurrant, is a cold-hardy, deciduous shrub valued for aromatic foliage and intensely flavored, vitamin C–rich berries. Native to cool, moist regions of northern Europe and northern Asia, it forms a multi-stemmed clump 1–2 m tall, bearing palmately lobed leaves and small greenish flowers in pendent racemes in spring. Fruits ripen mid to late summer, with glossy black skins and deep purple juice high in anthocyanins. Plants prefer fertile, moisture-retentive, slightly acidic to neutral soils and cool summers; reliable cropping depends on regular watering and annual renewal pruning, as berries form best on 1- to 3-year-old wood. Blackcurrants are self-fertile but cross-pollination can improve yield. Modern cultivars often resist white pine blister rust, though pests such as aphids, currant sawfly, and big bud mite may occur. Beyond culinary uses—juices, jams, cordials (cassis)—the leaves are also aromatic and used in teas. In the landscape, they thrive in sheltered, well-mulched positions with partial shade in hotter climates.

Cardamine pratensis is a clump-forming, rhizomatous perennial in the mustard family (Brassicaceae), renowned for its delicate spring display of four-petaled flowers in soft lilac, pink, or white. Typically 20–60 cm tall, it bears a basal rosette of pinnate leaves and simpler, sometimes almost entire, stem leaves. Native across much of Europe and western Asia and naturalized in parts of North America, it thrives in cool, damp ground. Flowers appear from early to late spring, providing nectar and pollen for early pollinators. It is a key larval food plant for the orange-tip butterfly (Anthocharis cardamines). In gardens, it excels in wet meadows, stream margins, or pond edges, where consistent moisture is assured. Plants may go semi-dormant after flowering, especially if conditions dry. Leaves and flowers are edible, offering a peppery, cress-like flavor for salads and garnishes. Best grown in moisture-retentive loam with ample organic matter and either full sun in wet soils or partial shade in average moisture.

Lamprocapnos spectabilis (formerly Dicentra spectabilis) is a clump-forming, herbaceous perennial prized for its elegant, arching stems lined with pendant, heart-shaped flowers in spring. Typically 60–90 cm tall, it bears soft, ferny, blue-green foliage that provides a delicate backdrop to its iconic pink outer petals and white inner “drop.” A classic woodland plant, it prefers cool conditions and rich, moisture-retentive yet well-drained soils. After a flush of bloom from mid- to late spring, plants often enter summer dormancy as heat rises; foliage yellows and dies back naturally. Hardy and long-lived in the right site, it is best situated among hostas, ferns, and other shade perennials that can fill space when it goes dormant. Cultivars include white-flowered ‘Alba’ and gold-leaved ‘Gold Heart.’ Though ornamental, all parts are toxic if ingested and may irritate skin. In borders, cottage gardens, and shady foundations, it offers early-season color and a romantic, old-fashioned charm.

Saponaria officinalis, commonly known as soapwort or bouncing bet, is a hardy rhizomatous perennial in the carnation family (Caryophyllaceae). Native to Eurasia and long naturalized elsewhere, it forms loose clumps 30–90 cm tall with smooth, opposite leaves and clusters of fragrant, five-petaled pale pink to white flowers from midsummer into early autumn. The roots and leaves contain natural saponins that produce a mild lather when agitated in water, historically used for washing delicate textiles and as a gentle foaming agent. Soapwort spreads by creeping rhizomes and self-seeding, thriving in well-drained, moderately fertile, often calcareous soils along roadsides, stream banks, and disturbed ground. In gardens it is valued for cottage or wildflower plantings, pollinator support, and cut flowers, but it can become weedy if not managed. It tolerates drought once established, cold winters, and a range of light from full sun to light shade. All parts are mildly toxic if ingested in quantity, so site away from grazing animals and curious children.

Reynoutria japonica, commonly known as Japanese knotweed, is a vigorous rhizomatous perennial in the buckwheat family (Polygonaceae). It grows 2–3 m tall, with hollow, bamboo-like, green to reddish stems marked by distinct nodes, and broadly ovate leaves with a truncate base and acute tip. In late summer to early autumn it produces airy panicles of small creamy-white flowers attractive to pollinators. Underground, an extensive, deep orange-brown rhizome network stores energy and enables rapid regrowth from small fragments. Native to East Asia, it has been widely introduced and is now among the most notorious invasive plants in temperate regions, colonizing riparian corridors and disturbed soils. The species is remarkably tolerant of varied soils, moisture, pH, and light. Young shoots are edible when properly prepared, and the plant contains resveratrol, used in traditional medicine. Cultivation requires strict containment to prevent spread and legal compliance where regulated. Roots can reach several meters deep, making eradication challenging. Stems die back in winter, re-sprouting vigorously from rhizomes in spring.