Coleus (also known as Painted Nettle or Flame Nettle)
Kingdom: Plantae, Division: Tracheophyta, Class: Magnoliopsida, Order: Lamiales, Family: Lamiaceae, Genus: Coleus, Species: scutellarioides · Lamiaceae (Mint family) · Simple; Deciduous (usually grown as an annual or indoor perennial)
Species
Coleus scutellarioides (synonym Plectranthus scutellarioides)
Leaf Type
Simple; Deciduous (usually grown as an annual or indoor perennial)
Family
Lamiaceae (Mint family)
Shape
Ovate to deltoid with an acuminate tip
Size
Approximately 2-4 inches long, which is typical for a young nursery-sized specimen. Adults can reach 6 inches.
Margin
Crenate to coarsely serrate (toothed edges)
Arrangement
Opposite (decussate) on a characteristically square stem
Rarity
Very Common; one of the most popular ornamental foliage plants in the world.
Color & Pattern
Limetta or chartreuse green base. Note: many cultivars exhibit vibrant variegation (purple, red, pink), but this specific specimen appears to be a solid chartreuse variety or is displaying light-starved coloration. The stem shows reddish-purple pigmentation.
Venation Pattern
Pinnate and reticulate; veins are slightly depressed on the upper surface giving a textured look.
Texture & Surface
Velvety/pubescent (covered in fine hairs) on both surfaces; soft and herbaceous texture.
Description
A bushy herbaceous perennial known for its vibrant foliage rather than flowers. It features square stems common to the mint family and produces small, tubular blue to white flowers on a raceme, though these are often pinched off by gardeners to encourage leaf growth.
Key Features
Square-shaped stem in cross-section, opposite leaf arrangement, velvety leaf texture, and distinctively toothed margins.
Habitat
Native to tropical and subtropical regions; prefers moist, well-drained soil with dappled shade or indirect bright light.
Geographic Range
Native to Southeast Asia through to Australia; widely naturalized and cultivated as an ornamental globally in temperate and tropical zones.
Condition Notes
Fair. The primary leaves show slight chlorosis (yellowing). One leaf in the background is wilting and browning at the edges, suggesting potential overwatering or a recent transplant shock. Health grade: Fair.
Interesting Facts
The genus name 'Coleus' is derived from the Greek word 'koleos', meaning sheath, referring to the way the stamens are fused. It was a favorite of Victorian-era gardeners.
Medicinal & Uses
Primarily used as an ornamental bedding or houseplant. Some traditional Southeast Asian cultures use it for treating wounds or inflammation, though it is not widely used in modern medicine.
Ecological Role
Provides nectar for bees and hummingbirds when allowed to flower, though its cultivated forms offer more aesthetic than ecological value in non-native regions.
Similar Species
Plectranthus species, Perilla (Shiso), and certain Salvias. Distinguishable by the softer, more velvety leaf of the Coleus.
Foraging Tips
Not a typical foraging plant. Look for it in garden centers or as a bedding plant in shady city parks. Identification is easiest by feeling the square stem.
Toxicity Warning
Mildly Toxic to pets (cats and dogs) if ingested, as the essential oils can cause skin irritation or gastrointestinal distress. Generally non-toxic to humans but can cause contact dermatitis in sensitive individuals.