Peace lilies are beautiful indoor plants that require careful attention to thrive. They need adequate light, humidity, and proper watering to flourish. A surprising solution to boost their growth lies in kitchen waste, specifically used coffee grounds. These grounds are rich in nitrogen, which promotes lush foliage and flowering. Additionally, their natural acidity helps balance the soil pH, creating ideal conditions for peace lilies. David Denyer, a horticulturist from Eflorist, highlights that coffee grounds not only nourish plants but also repel pests. To use this method, simply mix a spoonful of used coffee grounds with cold water and apply it to the soil monthly. However, gardeners should be cautious not to overuse coffee grounds, as excessive application can lead to overly acidic soil, harming the plants. Only brewed coffee grounds should be used, as unbrewed ones contain high caffeine levels that can inhibit growth. This simple technique allows plant enthusiasts to recycle waste while enhancing the health of their peace lilies.