Should you use coffee grounds for fiddle leaf figs?

Written by
Olivia Mitchell
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.While coffee grounds may seem beneficial, they can actually be harmful to fiddle leaf figs. They can significantly acidify soil, lowering the pH level below acceptable limits. This process can lead to the creation of nutrient imbalances, which prevent your fig from properly absorbing nutrients. Additionally, any mold that grows on the damp grounds will attract fungus gnats. Consider using safer alternatives instead.
Fiddle leaf figs are most effective at benefitting from balanced liquid fertilizer. A half-strength solution can be used during the spring and summer growth months and applied monthly into moist soil. Fertilization should be avoided during winter dormancy. I continue to use a 10-10-10 formula at all times.
Compost tea provides a chemical-free source of nutrients derived from organic sources. Brew the tea using worm castings and molasses. This liquid will contain beneficial microbes and low-intensity nutrients. Compost tea can be applied every two weeks during the active growth phase. Compost tea helps improve resilience to root pathogens and does not lead to increased nutrient buildup in the soil.
Application Timing
- Fertilize monthly April-September
- Skip applications October-March
- Apply only to moist soil
Alternative Nutrients
- Fish emulsion diluted 1:4
- Seaweed extract for micronutrients
- Banana peel water for potassium
Signs of nutrient imbalance can usually be observed without difficulty. The presence of yellow leaves, with green veins indicating magnesium deficiency. If you also notice stunted growth, it may indicate a nitrogen deficiency. Brown, dried leaf tips indicate salt buildup. I recommend flooding the soil once a month as a simple treatment to avoid these issues.
Proper nutrition creates vibrant growth. Healthy figs show glossy leaves and regular new growth. Soil should smell earthy, not sour. Roots remain white and firm. Consistent feeding prevents deficiencies.
Avoid coffee grounds completely for fiddle leaf figs. Choose balanced fertilizers or organic alternatives. Your plant will thrive with proper nutrition. Healthy growth rewards careful feeding practices.
Read the full article: How to Care for Fiddle Leaf Fig: Expert Guide