Brown, crispy edges can develop when the air is too dry, the soil dries out too much, or minerals and fertilizer salts accumulate. Check soil moisture, increase humidity with a humidifier if needed, and keep the plant away from hot drafts. Some leaf damage is normal and will not turn green again.

An older leaf turning yellow can be part of natural growth. If several leaves yellow, check the soil and drainage before watering again. Persistently wet soil can damage roots, while insufficient light can also affect foliage. Adjust the care that matches what you observe rather than changing everything at once.

Fine webbing and tiny pale speckles may indicate spider mites, especially in warm, dry conditions. Inspect the undersides of leaves and where the leaf stalks meet the plant. Isolate the plant, rinse and clean the foliage, and use a treatment labelled for indoor plants if pests persist.