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Fittonia, commonly known as nerve plant, is a popular houseplant appreciated for its vibrant foliage. While fertilizing is essential for healthy growth, over-fertilization can lead to problems. Recognizing the signs early can help prevent damage and keep your Fittonia thriving. Here are the top three signs of over-fertilization to watch out for.
1. Leaf Burn and Browning Edges
One of the most noticeable signs of over-fertilization is leaf burn. The edges of the leaves may turn brown and crispy, especially along the margins. This occurs because excess nutrients, particularly salts, accumulate in the soil and cause root stress. As a result, the plant struggles to absorb water, leading to dehydration and leaf damage.
2. Yellowing or Wilting Leaves
Over-fertilized Fittonia may exhibit yellowing leaves, a condition known as chlorosis. The yellowing often starts at the tips or edges and can spread across the leaf. Additionally, the plant may appear wilted or droopy despite adequate watering. This is because excessive nutrients interfere with the plant’s ability to take up water and nutrients properly.
3. Salt and Mineral Buildup
Another clear sign of over-fertilization is the buildup of white crust or deposits on the soil surface or around the pot’s edges. This residue is caused by excess salts from fertilizers that do not leach away with watering. Over time, these salts can damage roots, inhibit nutrient uptake, and lead to overall plant decline.
Preventing Over-fertilization
- Use a balanced, dilute fertilizer formulated for houseplants.
- Fertilize only during the active growing season, typically spring and summer.
- Flush the soil with water periodically to remove excess salts.
- Observe your plant regularly for early signs of stress.
By understanding these signs and practicing proper fertilization techniques, you can ensure your Fittonia remains healthy and vibrant. Always remember that less is often more when it comes to fertilizing houseplants.