Colocasia ‘Electric Blue Gecko’ is a visually striking plant, prized for its unique and captivating foliage. It adds a dramatic, tropical presence to any garden or indoor space.
Understanding ‘Electric Blue Gecko’
The ‘Electric Blue Gecko’ is a dwarf Colocasia variety, typically growing 2 to 3 feet tall and spreading 2 to 3 feet wide, forming a clump. Its most notable feature is the iridescent foliage, which shifts in color depending on the light. Leaves can appear deep black, metallic blue, or even purple, with dark maroon undersides and jet-black stems. Its large, heart-shaped leaves classify it as an elephant ear, a common characteristic of the Colocasia genus.
Caring for Your ‘Electric Blue Gecko’
Light
‘Electric Blue Gecko’ thrives in full sun to partial shade. For optimal leaf coloration and to prevent scorching, provide some afternoon shade, especially in hotter climates. Indoors, bright, filtered sunlight is ideal to avoid burning leaves. Darker-leaved Colocasia varieties, like ‘Electric Blue Gecko’, generally require more sun to maintain their intense coloration.
Watering
This Colocasia cultivar has a high water requirement, preferring consistently moist soil without becoming waterlogged. While it enjoys moisture, it is not immune to root rot, so proper drainage is still important. Allow the top inch or two of soil to dry slightly before watering thoroughly until excess drains. Consistent moisture is key; never let the plant dry out completely to prevent wilting and browning leaves.
Soil
‘Electric Blue Gecko’ grows best in rich, loose soil that retains moisture and drains well. A mix of garden soil, organic compost, and perlite or sand works well. Adding worm castings can enhance moisture retention and nutrient availability. A slightly acidic soil pH, around 5.5 to 6.5, is generally appropriate for Colocasia plants.
Temperature and Humidity
‘Electric Blue Gecko’ prefers warm temperatures, ideally between 65 and 90 degrees Fahrenheit. It does not tolerate temperatures below 50 degrees Fahrenheit for extended periods. High humidity is also beneficial for this plant, reflecting its native wetland habitat. For indoor cultivation, using a humidifier or placing the plant near a pebble tray filled with water can help maintain adequate humidity levels.
Fertilization
During its active growing season, from spring through fall, ‘Electric Blue Gecko’ benefits from regular fertilization. A balanced, all-purpose fertilizer, such as a 20-20-20 formula, can be applied, often diluted to half strength. Fertilizing every other week or tri-annually with a slow-release formula can provide consistent nutrients. Apply fertilizer during watering days to prevent leaf burn and avoid direct contact with the plant’s base.
Planting and Placement
This cultivar is hardy in USDA Zones 8-11 for outdoor perennial growth, and can be grown as an annual in colder zones (4-6) or brought indoors for winter. For container growing, choose a pot 10 to 20 inches in diameter and at least 10 inches deep to allow for root development and future growth. The plant can be placed in garden beds, used as a border plant, or featured in containers to add a tropical effect.
Winter Care and Dormancy
‘Electric Blue Gecko’ typically enters a dormant phase in colder climates, where its foliage may die back. In USDA Zones 7 and below, it is advisable to lift the tubers from the ground before the first frost and store them indoors in a cool, dry, and dark location for the winter. Alternatively, container-grown plants can be brought indoors to a warm, bright location to continue growing, though growth may slow. Mulching outdoor plants in borderline hardiness zones can help protect the tubers if leaving them in the ground is desired.
Common Issues and Troubleshooting
Yellowing leaves often indicate overwatering or nutrient deficiencies, while browning edges may suggest insufficient humidity or consistent drying out of the soil. While generally resistant to most pests, it can occasionally be susceptible to spider mites or thrips, especially when newly introduced. Regular inspection and prompt treatment with insecticidal soap can manage potential infestations.
Propagation
Propagating ‘Electric Blue Gecko’ is primarily achieved through the division of its tubers or offsets. The best time to divide these plants is in the spring as new growth begins. Carefully dig up the plant and gently separate the corms or tubers, ensuring each section has some roots and a growth point. Each division can then be replanted in its own container or garden spot, providing an easy way to multiply your plants.