The Nematanthus ‘Black Gold’, commonly known as the Goldfish Plant, is recognized for its distinctive pouch-like flowers. These vibrant orange or red blooms emerge against glossy, dark green foliage. Its unique appearance makes it a popular choice for hanging baskets or tabletop displays, adding tropical charm. This plant is easy to care for.
Optimal Growing Environment
Nematanthus ‘Black Gold’ thrives in bright, indirect light. An east, west, or north-facing window provides ideal conditions. Avoid direct sunlight, especially hot afternoon sun, as it can scorch leaves and hinder blooming. Insufficient light may lead to a lack of flowers and leggy growth.
The plant prefers warm temperatures, 65°F to 75°F. It is sensitive to cold drafts and temperatures below 55°F, which can cause leaf drop. Moderate to high humidity is beneficial. To increase humidity, place the plant on a pebble tray or use a humidifier.
Ongoing Care and Maintenance
Water Nematanthus ‘Black Gold’ by allowing the top 1-2 inches of soil to dry between waterings. Then, saturate the soil until water drains from the pot’s bottom. Overwatering causes root rot, while underwatering leads to wilting and leaf drop. Adjust watering frequency seasonally, reducing it in cooler months.
Use a well-draining, airy potting mix, such as a peat-based mix with perlite or coir, to prevent waterlogging. Fertilize every two to four weeks during spring and summer. Use a balanced, water-soluble fertilizer diluted to half strength. This encourages healthy growth and abundant blooms.
Pruning helps maintain the plant’s shape and promotes bushier growth. Trim stems, especially after flowering, to encourage new growth and more blooms. Pruning by about half in spring helps keep the plant compact.
Propagation Techniques
Propagate Nematanthus ‘Black Gold’ using stem cuttings, ideally in spring or summer. Select a healthy 4-6 inch stem section and cut just below a leaf node. Remove lower leaves to expose the nodes.
Root cuttings in water or a moist, lightweight growing medium with perlite. Rooting hormone can enhance development but isn’t essential. Cover the cutting with a plastic bag or use a propagation dome for high humidity. Keep the medium moist, in a warm, bright, indirect light location until roots establish, usually within weeks.
Addressing Common Issues
Lack of blooms can stem from insufficient light, improper fertilization, or no resting period. Provide bright, indirect light and a phosphorus-rich fertilizer during the growing season to encourage flowering. Yellowing leaves often indicate overwatering, poor drainage, or nutrient deficiencies. Adjust watering and ensure good drainage to resolve this.
Leggy growth, with stretched stems and sparse foliage, indicates insufficient light. Move the plant to a brighter location and prune regularly for a more compact appearance. Nematanthus ‘Black Gold’ can encounter pests like spider mites or mealybugs. Regular inspection and prompt organic pest control can manage these issues.