LARGE - Mammillaria elongata, commonly known as Ladyfinger Cactus or Gold Lace:
Light: Mammillaria elongata prefers bright, indirect light. It can tolerate some direct sunlight, especially in the morning or late afternoon, but avoid intense afternoon sun, which can scorch its delicate tissues.
Watering: Water sparingly but deeply during the growing season (spring to fall). Allow the soil to dry out completely between waterings to prevent root rot. Reduce watering in winter when the plant is dormant.
Soil: Plant in a well-draining cactus or succulent mix. Adding perlite or coarse sand can improve drainage. Ensure the pot has drainage holes to prevent waterlogging.
Temperature and Humidity: Mammillaria elongata prefers average to warm temperatures, ideally between 65-80°F (18-27°C) during the growing season. It can tolerate cooler temperatures in winter but protect from frost and freezing conditions. Average indoor humidity is typically suitable; avoid high humidity.
Fertilizing: Feed lightly with a balanced, diluted fertilizer formulated for cacti and succulents during the growing season (spring and summer), about once a month. Avoid fertilizing during fall and winter when growth slows down.
Propagation: Propagate from offsets (pups) or seeds. Allow offsets to dry and callus for a few days before planting them in a well-draining succulent mix. Keep the soil lightly moist until roots develop.
Pruning: Trim any dead or damaged parts of the plant as needed. Mammillaria elongata generally maintains a compact growth habit without much pruning required.
Pests and Problems: Watch for common cactus pests such as mealybugs or spider mites. Treat infestations promptly with insecticidal soap or rubbing alcohol. Ensure good air circulation around the plant to prevent fungal issues.
Potting and Repotting: Repot every 2-3 years or when the plant outgrows its container. Choose a slightly larger pot with drainage holes to accommodate root growth.
Special Care Notes:
Handle Mammillaria elongata carefully to avoid damaging its spines, which can cause irritation or injury.
Protect the plant from cold drafts and sudden temperature changes, as these can stress the cactus.
By following these care guidelines, you can help your Mammillaria elongata (Ladyfinger Cactus, Gold Lace) thrive and maintain its charming appearance.