The “Mountain Dew Plant” is a popular choice for indoor gardeners, known for its distinctive, vibrant, often neon-green or chartreuse foliage. This informal name evokes the bright, effervescent quality of the popular soda. Its appeal stems from its lively visual impact and its reputation for being relatively easy to maintain, making it a favorite for new plant owners or those seeking a low-fuss addition to their collection. This guide clarifies the plant behind this playful moniker and details its successful cultivation.
What is the “Mountain Dew Plant”?
The plant commonly known as the “Mountain Dew Plant” is Plectranthus ciliatus, a species in the Lamiaceae family (which includes mint and salvia). While often sold under catchy nicknames like ‘Easy Gold’ or ‘Aureus’, its botanical name ensures precise identification. This Plectranthus species is native to subtropical Africa. Its vigorous, often trailing growth habit suggests a bubbling, overflowing quality, reinforcing its popular association with the beverage. It is widely cultivated for its ornamental value, both indoors and outdoors in suitable climates.
Characteristics of Plectranthus ciliatus
Plectranthus ciliatus is a subshrub that grows along the ground, reaching up to 0.6 meters in height. Its broadly elliptic to ovate leaves often have a slightly toothed edge and a slightly fuzzy texture from short hairs. The stems are long, somewhat fleshy, and sometimes purplish.
While many cultivars feature bright green or chartreuse foliage, variations include leaves with white edges, yellow or purple tints, or green leaves with striking purple undersides. This plant’s trailing growth makes it versatile for ground cover, hanging baskets, or as a vibrant potted plant indoors. It produces small, tubular flowers, typically on spikes, ranging from white to light purple or pale blue.
Caring for Your “Mountain Dew Plant”
Light
Plectranthus ciliatus thrives in bright, indirect light. An east or west-facing window with filtered sunlight is ideal. While it tolerates some shade, too little light can dull its vibrant foliage colors. Conversely, direct, intense sunlight, especially during the hottest parts of the day, can scorch its leaves and hinder growth.
Water
Consistent moisture is preferred for Plectranthus ciliatus, but avoid overwatering. Allow the top inch or two of soil to dry before rewatering. This prevents root rot, a common issue in overly wet conditions. While the plant appreciates regular hydration, it can tolerate brief droughts by storing water in its stems.
Soil and Potting
A well-draining potting mix is essential. A standard all-purpose potting soil amended with perlite or sand provides necessary drainage while retaining moisture. The plant prefers a slightly acidic to neutral soil pH (6.0-7.0). Repot every one to two years, or when root-bound, to provide fresh nutrients and adequate space.
Temperature and Humidity
Plectranthus ciliatus performs best in moderate indoor temperatures. It is not frost-tolerant and must be protected from cold temperatures, especially below 50°F (10°C), which can cause stress and hinder growth. While it adapts to average household humidity, it appreciates higher humidity (50-80%). Occasional misting can provide a beneficial boost.
Fertilizing
During its active growing season (spring through fall), Plectranthus ciliatus benefits from regular fertilization. Apply a balanced liquid fertilizer (e.g., 10-10-10 or 20-20-20) every four to six weeks to support vigorous growth and vibrant foliage. Dilute the fertilizer to half strength to prevent over-fertilization and nutrient burn. In winter, reduce or cease fertilization as growth naturally slows.
Common Problems and Solutions
Leggy growth, where stems become elongated and sparse, is a common concern. Address this by regularly pruning or pinching back shoot tips to encourage bushier, more compact growth.
Yellowing leaves often indicate a watering issue, either from too much water (leading to root rot) or insufficient water (causing dehydration). Check soil moisture before watering to regulate this.
This plant can occasionally encounter pests like spider mites, aphids, or mealybugs, particularly during warmer months. Manage these with insecticidal soap or neem oil. Poor drainage or consistent overwatering can also lead to fungal issues like root rot or stem rot, highlighting the importance of well-draining soil and careful watering.