Peace lilies typically thrive in low to moderate light conditions. If your peace lily is not blooming, it could be due to insufficient light. Try placing it in a location with brighter indirect light to encourage blooming.

Another reason for your peace lily not blooming could be over-fertilization. Peace lilies are sensitive to excessive amounts of fertilizer, so make sure you are not overfeeding it. Stick to a well-balanced fertilizer and follow the instructions on the package.

Temperature and humidity can also play a role in the blooming of peace lilies. They prefer temperatures between 65-85°F (18-29°C) and high humidity levels. If the air in your home is dry, consider using a humidifier or placing the plant on a tray filled with water and pebbles to increase humidity.

Are you watering your peace lily correctly? Overwatering or underwatering can prevent blooming. Make sure the soil is consistently moist but not soggy. Water it thoroughly when the top inch of soil feels dry to the touch. Also, avoid using chlorinated water as peace lilies are sensitive to chlorine.

Sometimes peace lilies need a period of dormancy to bloom. During the winter months, they may naturally go through a dormant phase where they stop blooming. This is normal and they will resume blooming once the growing season starts again. Patience is key!

Is your peace lily pot-bound? When the roots have filled up the pot completely, they may not have enough space to grow and bloom. If this is the case, it's time to repot your peace lily into a slightly larger container with fresh potting soil.

Check the health of your peace lily's leaves. If the leaves are yellowing or drooping, it could indicate a nutrient deficiency or a pest infestation. Make sure you are providing the necessary nutrients through regular fertilization and inspect the plant for any signs of pests such as mealybugs or spider mites.

Lastly, peace lilies prefer slightly acidic soil. Check the pH level of the soil and adjust it if needed. You can use a pH testing kit available at garden centers to determine the acidity of the soil. If the pH is too high, you can add some peat moss or vinegar to lower it.