Episcia cupreata is part of the Gesneriaceae family and its native range is Nicaragua to N. Brazil where it grows as a subshrub primarily in the wet tropical biome.
This plant has a creeping, stoloniferous growth habit, leaves are dark green with striking metallic silver centre, often bordered by rich dark green or bronze margins. The shimmering silver creates a beautiful contrast, making each leaf a focal point. Episcia produces small, trumpet-shaped flowers, typically in vibrant orange-red.
The genus name Episcia is derived from the Greek 'episkios,' meaning 'shaded,' referring to its natural habitat in the understory of tropical forests.
Light: Episcia 'Silver Shield' thrives in bright, indirect light, mimicking its natural habitat on the rainforest floor. Strong, direct sunlight must be avoided as it can easily scorch its delicate leaves, resulting in unsightly brown, crispy spots or a fading of its vibrant coloration. Too little light, conversely, may lead to slower growth and less pronounced silver patterning. For a typical UK home, a position near an east or north-facing window, or a few metres away from a south or west-facing window with sheer curtains, provides ideal conditions. It also responds well to artificial grow lights.
Water: The potting mix should be kept consistently moist but never waterlogged. It is crucial to allow the top 2-3 cm (approximately 1 inch) of the soil to dry out slightly between waterings. Ensuring the pot has excellent drainage is paramount to prevent root rot, which can be a common issue for this plant. Avoid splashing water directly on the leaves, as this can lead to spots or fungal issues. Reduce watering significantly in autumn and winter, as the plant's growth naturally slows. Use room temperature water to avoid shocking the roots.
Potting mix: An airy, chunky, and well-draining potting mix is essential for Episcia 'Silver Shield', though it should also retain some moisture. A specialised African violet mix or a blend incorporating components such as coco coir, perlite, and a small amount of orchid bark is highly recommended to provide the necessary aeration and drainage while maintaining adequate hydration. A slightly acidic soil pH, between 6.0 and 7.0, is generally preferred.
Fertilising: During its active growing period in spring and summer, a balanced, diluted liquid fertiliser should be applied every two to four weeks. Some sources recommend a high-potassium fertiliser to encourage flowering. It is important to reduce or completely cease fertilising during the autumn and winter months when the plant's growth slows down. Overfeeding can lead to root burn, so always adhere strictly to dilution recommendations.
Temperature: This plant prefers warm and stable temperatures, ideally ranging between 20°C and 26°C. It is vital to shield it from cold draughts and sudden temperature fluctuations, which can stress the plant and cause leaf damage or even lead to its decline. Temperatures consistently falling below 15°C are detrimental and should be avoided.
Humiditiy: High humidity levels are profoundly beneficial for Episcia 'Silver Shield', with ideal levels being above 60-70%. As a tropical understory plant, it thrives in moist air. To maintain optimal conditions, particularly during drier indoor periods in the UK (often due to central heating), consider using a humidifier nearby or placing the plant on a pebble tray filled with water, ensuring the pot is not submerged. Terrariums are also an excellent environment for this plant due to their ability to maintain high humidity.
Growth habit: Episcia 'Silver Shield' exhibits a creeping or trailing growth habit, sending out long runners (stolons) from the main plant. These stolons produce new plantlets that will readily root upon contact with moist soil, allowing the plant to spread horizontally and form a dense mat. This makes it an ideal choice for hanging baskets where its stems can cascade gracefully, or for wider, shallower pots where it can spread as a groundcover. Indoors, it typically stays under 20 cm (8 inches) tall but can spread 30-40 cm (12-16 inches) wide.
Toxicity: Episcia 'Silver Shield' is generally considered non-toxic to humans and pets, according to sources like the ASPCA.