The Guiana Chestnut, also known as the Money Tree, thrives in both indoor and outdoor settings when provided with balanced nutrition. As a tropical plant, it requires a mix of macronutrients (nitrogen, phosphorus, potassium) and micronutrients (iron, magnesium, calcium) to support its lush foliage and sturdy trunk. A fertilizer with an NPK ratio of 10-10-10 or 20-20-20 is generally ideal, ensuring equal parts nitrogen for leaf growth, phosphorus for root development, and potassium for overall health.
Organic fertilizers, such as compost, worm castings, or fish emulsion, release nutrients slowly and improve soil structure, making them suitable for long-term Guiana Chestnut care. Synthetic fertilizers, like water-soluble granules, provide immediate nutrient boosts but require careful dilution to avoid root burn. For indoor plants, organic options are often preferred to minimize salt buildup in containers, while outdoor plants may benefit from controlled-release synthetic formulas during active growth phases.
Indoor Guiana Chestnuts benefit from gentle, consistent feeding. Liquid fertilizers diluted to half-strength (e.g., 5-5-5) can be applied monthly during spring and summer. Alternatively, slow-release pellets (e.g., Osmocote) provide steady nutrition over 3–6 months. Avoid over-fertilizing, as indoor plants are more susceptible to salt accumulation, which can lead to leaf browning or root damage.
Outdoor Guiana Chestnuts, exposed to more sunlight and rain, may require stronger fertilization. A balanced granular fertilizer (10-10-10) applied every 6–8 weeks during the growing season supports vigorous growth. For nutrient-rich soil, incorporate organic matter like aged manure or compost annually. In humid climates, ensure proper drainage to prevent nutrient leaching.
Guiana Chestnuts occasionally show signs of micronutrient deficiencies, such as yellowing leaves (iron deficiency) or stunted growth (magnesium deficiency). Chelated iron sprays or Epsom salt solutions (1 tablespoon per gallon of water) can address these issues. For potted plants, occasional foliar feeding ensures quick absorption.
Spring and summer are the primary growing seasons for Guiana Chestnuts, requiring regular fertilization. Reduce feeding in autumn and halt entirely in winter, as the plant enters dormancy. Over-fertilizing during dormant periods can stress the plant and lead to weak growth.
Yellowing leaf tips, crusty soil surface (salt deposits), or sudden leaf drop indicate over-fertilization. Flush the soil with distilled water to leach excess salts, and repot indoor plants with fresh soil if necessary. For outdoor plants, reduce fertilizer frequency and increase watering to dilute residual nutrients.
