Archives: Plants

Silene coronaria, widely known as rose campion, is a short-lived perennial or biennial in the carnation family (Caryophyllaceae). It forms tidy basal rosettes of soft, silver-felted leaves that lend a luminous contrast to surrounding greens. In late spring and summer, slender, tomentose stems rise 60–90 cm, carrying a long succession of intensely magenta to rosy-pink single flowers with flat, notched petals and pale centers; white cultivars also exist. The silvery foliage reflects sun and resists drought, making the plant well suited to lean, well-drained soils, gravel gardens, and cottage borders. Plants usually flower in their second year, then persist a few seasons but readily self-sow to maintain a carefree colony. Flowers attract bees, butterflies, and night-flying moths; the foliage is generally unpalatable to deer and rabbits. With minimal care—good drainage, plenty of sun, and occasional deadheading—rose campion provides months of color and textural interest, thriving in conditions that challenge fussier perennials.

Rhododendron simsii, commonly sold as the florist’s or indoor azalea, is a compact, evergreen rhododendron native to the hills of southern China and adjacent northern Vietnam. It forms dense, twiggy shrubs with small, leathery, dark-green leaves and an abundant late-winter to spring display of funnel-shaped blossoms in shades of pink, red, white, coral, or bicolors. Cultivated houseplant selections are largely hybrids derived from R. simsii, prized for heavy flowering in cool indoor conditions. Unlike hardy garden azaleas, these are best kept in containers and appreciate consistently acidic, humus-rich, well-drained media. Their shallow, fibrous roots are sensitive to lime, drought, and waterlogging, so careful watering and soft, low-alkalinity water are essential. Provide bright, indirect light, cool temperatures, and good humidity to prolong bloom. After flowering, deadhead and lightly prune to maintain shape and encourage bud set for the following season.

Nigella damascena, commonly known as love-in-a-mist, is a cool-season annual in the buttercup family (Ranunculaceae) cherished for its delicate, finely cut foliage and flowers surrounded by lacy, mist-like bracts. Plants reach 20–50 cm tall and bear solitary blooms in shades of sky blue, white, pink, or violet from late spring to early summer. After flowering, inflated, balloon-like seed capsules form, drying to papery pods prized in fresh and dried arrangements. It thrives in lean, well-drained soils that are neutral to slightly alkaline and performs best in cool conditions. A low-maintenance cottage-garden staple, it self-seeds gently, often reappearing where soil is lightly disturbed. Native to the Mediterranean region and Southwest Asia and widely naturalized, it attracts bees and beneficial insects and is generally pest-free. Though sometimes confused with the culinary black cumin (Nigella sativa), N. damascena is not edible; its seeds are considered mildly toxic, so avoid ingestion.

Lobelia erinus is a compact, cool-season annual native to southern Africa, prized for its profuse, jewel-toned blooms and tidy mounding or trailing habit. Plants typically reach 10–20 cm tall and 20–35 cm wide, forming cushions or cascading skirts ideal for edging, containers, window boxes, and hanging baskets. The delicate, fan-shaped flowers—most often cobalt or sky blue, but also violet, lavender, rose, and white—feature a distinctive three-lobed lower lip and two small upper lobes. Foliage is fine-textured, with small, serrated leaves that enhance the plant’s airy appearance. Flowering is heaviest in cool weather, from spring into early summer and again in autumn where summers are hot; sustained heat can stall bloom. Modern series offer improved trailing forms and heat tolerance, yet consistent moisture, sharp drainage, and afternoon shade in warm climates remain key. Lobelia erinus pairs well with cool-season companions such as alyssum, nemesia, and pansies, adding vibrant color and soft spill to mixed plantings.

Valeriana rubra is an older name historically applied to Centranthus ruber, a long-blooming Mediterranean perennial prized for its clouds of crimson to rose-pink (and sometimes white) flowers. Upright, branching stems rise 45–90 cm from a woody crown, bearing opposite, blue‑green, lanceolate leaves that are often entire and slightly fleshy. In late spring through summer—and in mild climates into autumn—dense, domed cymes of small tubular blossoms attract bees, butterflies, and other pollinators. Adapted to lean, well‑drained, often calcareous soils, it thrives in cracks of stone walls, rocky slopes, and coastal cliffs, tolerating wind and salt spray. The plant self-seeds readily via plume-tufted achenes and can naturalize in suitable sites. Drought-tolerant once established, it excels in hot, sunny exposures and requires minimal care, making it a reliable choice for xeric gardens, cottage borders, and difficult masonry settings. Deadheading prolongs bloom, while allowing some seed ensures gentle colonization. Generally pest- and disease-resistant, it performs best with full sun, sharp drainage, and modest fertility.

Carissa macrocarpa, commonly known as Natal plum, is a dense, evergreen, spiny shrub native to South Africa’s coastal dunes and thickets. Its glossy, leathery, deep-green leaves and showy, star-shaped white flowers—often fragrant at night—lend year-round ornamental appeal. In warm climates it blooms and fruits intermittently, producing oval, crimson, plum-like berries that are edible when fully ripe, with a tangy-sweet flavor reminiscent of cranberry and strawberry. Mature plants typically reach 1–2 m (3–6 ft) high and wide, forming excellent hedges, security plantings, or salt-tolerant seaside screens. Natal plum thrives in sandy, well-drained soils and tolerates drought, wind, and salt spray once established. It bears sharp, forked spines and exudes a milky latex; while ripe fruit is safe to eat, other plant parts can be irritating or toxic if ingested. Compact cultivars like ‘Boxwood Beauty’ offer reduced thorniness and a tight habit, making the species a versatile choice for containers, urban gardens, and low-maintenance landscapes in frost-free to lightly frosty regions.

Delphinium elatum, commonly called tall larkspur, is a stately herbaceous perennial prized for its towering spires of densely packed florets in shades of blue, violet, indigo, white, and pink. Plants typically reach 1.2–2 m tall with deeply lobed, palmate leaves and hollow, upright stems that benefit from staking. A magnet for bees and other pollinators, D. elatum has given rise to many garden hybrids and selections known for bold color and strong vertical accents in borders and cottage gardens. It thrives in cool-summer climates with fertile, moist, well-drained soils and appreciates consistent moisture without waterlogging. Deadheading can encourage a secondary, shorter flush after the main early-summer bloom. Although long-lived in ideal conditions, it is often short-lived in hot, humid regions and may require periodic replanting. All parts are toxic if ingested due to diterpenoid alkaloids, so site away from livestock and curious pets. Excellent as a cut flower when stems are harvested just as lower florets open.

Coprosma repens is a tough, evergreen shrub or small tree prized for its exceptionally glossy, reflective foliage—hence the name “mirror plant.” Native to coastal New Zealand, it forms dense, rounded growth 1–5 m tall, with thick, leathery, opposite leaves that resist salt, wind, and desiccation. Small, inconspicuous, dioecious flowers appear in spring, followed by orange to red drupes that attract birds. Numerous ornamental cultivars feature variegated or bronze foliage, valued for year-round color and texture. It excels as a coastal hedge, windbreak, or container specimen, tolerating pruning and shaping. In mild climates it’s low-maintenance outdoors; indoors it prefers bright light and excellent drainage to avoid root issues. While drought-tolerant once established, it benefits from regular water in containers. Its resilience to seaside conditions, combined with high ornamental value, makes C. repens a reliable structural plant for contemporary gardens, courtyards, and exposed sites.

Sambucus nigra, commonly called European elder or black elderberry, is a fast-growing, deciduous shrub to small tree native to Europe and parts of Western Asia and North Africa. It typically reaches 4–8 m tall, with opposite, pinnate leaves and arching, pithy stems. In late spring to early summer, it bears broad, flat-topped corymbs of fragrant, creamy-white flowers beloved by pollinators. These give way to heavy clusters of glossy purple-black berries in late summer, prized for cooking into jams, syrups, and wines after proper heat preparation. The plant thrives in moist, fertile, well-drained soils and tolerates clay and periodic wetness, making it common along hedgerows and streambanks. Fruiting is best in full sun with adequate moisture. Uncooked berries, seeds, leaves, and stems contain cyanogenic glycosides and should not be eaten raw. As a landscape plant, S. nigra offers ornamental blooms, wildlife value, and useful fruit, while responding well to renewal pruning to maintain vigor and productivity.

Begonia × tuberhybrida is a showy group of garden and container begonias bred from several Andean tuberous species (notably B. boliviensis, B. veitchii, B. pearcei, and B. rosaeflora). Grown from knobby tubers, plants produce lush, asymmetrical leaves and large flowers in vivid shades of red, orange, yellow, pink, and white, in single, semi-double, or fully double forms. Growth habits range from upright to trailing, making them ideal for pots, baskets, and shaded beds. They thrive in cool, humid, well-ventilated conditions with bright, filtered light and even moisture. In warm summers they appreciate protection from midday sun and drying winds. Flowers are prolonged by regular deadheading. After the season, foliage naturally yellows and dies back as the tuber enters dormancy; tubers can be lifted, dried, and stored frost-free for replanting next spring. Though stunning, they can be sensitive to overwatering, cold, and poor air circulation, which predispose plants to Botrytis and root rots; careful watering, drainage, and spacing are essential.