The weeping fig, Ficus benjamina, is a popular indoor plant known for its graceful branches and glossy leaves. Proper fertilization is important for maintaining its health and promoting vibrant growth, ensuring it thrives indoors.
Why and When to Fertilize Weeping Figs
Fertilizing weeping figs supports lush foliage, strong root development, and overall plant vigor. Regular feeding helps these plants develop a dense, green canopy. Nutrients also strengthen root systems, enabling better water and nutrient absorption from the soil.
The optimal time for fertilizing weeping figs is during their active growing season, from spring to summer. During these months, the plant actively produces new growth and utilizes nutrients more efficiently. Monthly or bi-monthly fertilization is often recommended. As fall approaches and temperatures drop, growth slows, so reduce feeding frequency. During dormant winter months, cease fertilization to avoid stressing the plant.
Choosing the Right Fertilizer
Choosing the right fertilizer for weeping figs requires understanding their nutritional needs. These plants benefit from a balanced NPK (Nitrogen-Phosphorus-Potassium) ratio, or one slightly higher in nitrogen for leafy growth. A common recommendation is a 3-1-2 ratio, which balances foliage development, though a balanced 10-10-10 or 20-20-20 formula is also suitable. Nitrogen promotes vibrant green leaves, phosphorus aids root development and plant strength, and potassium supports functions like disease resistance and water regulation.
Fertilizers are available in liquid and slow-release granular forms. Liquid fertilizers mix with water for quick nutrient uptake, good for immediate boosts and precise dosage control. Slow-release granular fertilizers are incorporated into the soil, gradually releasing nutrients over months, providing a steady supply with less frequent application. For weeping figs, a diluted liquid fertilizer or a controlled-release granular product designed for houseplants can be effective.
How to Fertilize Weeping Figs
Correct fertilizer application ensures effective nutrient absorption and prevents damage. When using liquid fertilizers, dilute them according to product instructions, often to half-strength, to prevent root burn. This ensures a gentle, consistent nutrient supply without overwhelming the delicate root system.
Before applying fertilizer, thoroughly water the plant. This pre-watering helps prevent root burn by ensuring moist soil, allowing for better nutrient distribution and uptake. Pour the diluted fertilizer solution evenly around the plant’s base, ensuring it reaches the root zone. Avoid direct contact with the plant’s trunk or foliage, as this can cause localized damage. Consistent and accurate dosage based on plant size and product guidelines helps maintain optimal health.
Troubleshooting Fertilizer Issues
Even with proper care, weeping figs can show signs of nutrient imbalance from under- or over-fertilization. Under-fertilization manifests as stunted growth, pale or yellowing leaves, and a general lack of vigor, indicating insufficient nutrients for metabolic processes and growth. To address this, gradually increase fertilizer dosage or frequency during the growing season, monitoring the plant’s response.
Conversely, over-fertilization can cause more severe symptoms, including crispy or brown leaf edges, wilting leaves, and a white crust on the soil surface due to salt buildup. This occurs when excess nutrients draw moisture from the roots, leading to dehydration and root burn. If over-fertilization is suspected, flush the soil thoroughly with plain water to leach out excess salts, pouring a large volume through the pot until it drains freely. Remove any visible salt crust from the soil surface. After flushing, suspend fertilization for a period to allow the plant to recover before resuming a more conservative feeding schedule.