11 Reasons Peace Lily is Not Blooming and Fixes | How to Promote Flowering in Peace Lily

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Peace Lily will not bloom if the growing conditions are wrong, for example too low light, improperwatering, low air humidity, poor feeding, wrong soil, low temperatures, pests and diseases among others.

Peace Lily grows best in bright indirect light away from direct sunlight, warm and moderately humid conditions and moderately moist, fertile, well-drained soil during the growing season that mimick its native tropical conditions. Read more on how to grow & care for Peace Lily (Spathiphyllum wallisii).

When these conditions are not met, the plant may not bloom. Below are 11 reasons why your Peace Lily is not blooming and how to boost it to bloom.

11 Reasons Peace Lily is Not Flowering and Remedies

1. Too little light

Peace Lily thrives in bright indirect light away from direct sunlight. Enough light is required for photosynthesis, the process of food making in plants, which is needed for growth and energy for the plant.

It can tolerate low light but too little light means that the plant cannot make adequate food for growth and development which results in stunted growth and lack of blooms.

How to fix it

Position the Peace Lily to a brighter spot where it can receive bright, indirect light or instal grow lights if the natural lighting is not enough. Check out these full spectrum grow lights available on Amazon.

Rotate the pot regularly to ensure that the plant receives light on all sides for uniform growth and prevent lopsided growth. Check out this guide on understanding light for houseplants.

2. Pest infestations

Peace Lily is fairly resistant to pests. However, weak plants are prone to spider mites, mealy bugs, aphids and fungus gnats. The sap-sucking insects will cause the plant to become dehydrated, reduced growth and flowering.

How to fix it

Make sure that the Peace Lily is healthy at all times by providing it with the correct growing conditions. Reduce pest infestations by raising the humidity as they are prevalent in dry conditions.

Keep the plant well pruned by removing spent flowers, dead and yellow foliage to minimize pest infestations. Cut the leaves with a clean sharp knife or scissors as close to the base as possible.

Seperate the affected Peace Lily away from the rest of the plants to minimize spread to the and treat it with an insecticidal soap or neem oil. Make sure to follow manufacturer's instructions.

3. Too low humidity

Peace Lily thrives in average humidity. Very low air humidity will cause the plant to develop brown leaf tips, drooping leaves and lack of flowers.

How to fix it

To heighten humidity for Peace Lily, you may grow the plant in a well-lit bathroom, kitchen and other humid areas in the home. You may also set the pot on a wet pebble tray or use a cool mist humidifier. Read more on how to increase humidity for houseplants.

4. Poor quality Soil

Poor quality soil for Peace Lily does not drain easily and therefore it easily becomes compacted or soggy which will lead to reduced growth and flowering.

How to fix it

Grow Peace Lily in fertile, well-drained soils to prevent it from getting soggy while providing the required nutrients. Check out these 9 Best Potting Mixes for Peace Lily Grown Indoors.

5. Improper feeding

Overfeeding a Peace Lily will cause the roots to die due to fertilizer burn. If the roots die, they cannot take up nutrients and water required for photosynthesis, thus the plant begins to die due to lack of food.

Underfeeding implies that the plant is not getting enough nutrients needed for growth, therefore, the plant will not bloom. Lack of micronutrients like Magnesium and Iron in the soil will negatively affect growth and flowering.

How to fix it

Feed Peace Lily monthly during the growing season with a phosphorous-rich, water-soluble fertilizer to encourage flowering. Ensure that the fertilizer contains micronutrients. Do not feed in the cold season as growth is minimal and feeding at this time can lead to fertilizer burn and death of the plant. Learn how to feed houseplants.

6. Underwatering

Underwatering implies that there is too little moisture in the soil for the Peace Lily to take up to the leaves for photosynthesis, to make food for growth of the plant. Without adequate food for growth and other processes in the plant, it will not flower if the situation is not corrected.

How to fix it

Peace Lily requires that the soil be kept moderately moist at all times during the growing season. Water the plant thoroughly during the growing season until water comes out through the drainage holes.

Always water the Peace Lily when the top 2-3 inches of soil begin to dry out to keep the soil moderately moist during the growing season. Lessen watering in the cold season as growth is minimal at this time but do not allow the soil to dry out completely for prolonged periods of time. Learn more on how to water houseplants correctly.

7. Overwatering

Overwatering causes the soil to become soggy which leads to the death of the roots due to lack of oxygen. When the roots die, the Peace Lily cannot take up water and therefore it cannot make food for growth and flowering.

How to fix it

Peace Lily grows best in moderately moist soil at all times during the growing season. Allow the top 2-3 inches of soil to dry out between waterings. Cut down on watering in the cold season but do not allow the soil to dry out completely. Ensure also that the pot has a drainage hole to prevent the soil from getting soggy.

8. Extreme temperatures

Extreme temperatures, either too cold or too hot will reduce growth and flowering. Cold drafts coupled will cause sudden drops in temperature which will lead to reduced growth and by extension reduced blooming. Too hot temperatures will cause the plant to become dehydrated which results in lack of blooms if it is not corrected.

How to fix it

Keep the Peace Lily away from cold drafts like windy windows and doors, air conditioning units and other drafty areas to avoid exposing the plant to extremely low temperatures.

Position theplant away from hot surfaces, heating units, hot stoves and other hot places to avoid too high temperatures. Maintain average warmth of 16-28⁰C. Check out this guide on understanding temperature for houseplants.

9. Extremely pot-bound plant

Peace Lily flowers best when slightly pot-bound but when it becomes extremely pot-bound it begins to wilt, droop and may die due to reduced growth. This because the roots have filled the pot and there is very little soil to hold water when the plant is watered.

If there is too little water in the soil for the plant to take up to the leaves for photosynthesis, the plant cannot make enough food for growth and blooming.

How to fix it

If a lot of roots are growing through the drainage hole, repot the Peace Lily into a pot one size larger than the current one or divide it into several sections to propagate new plants.

Repot the plant at the beginning of the growing season when it becomes pot-bound. Ensure that the pot has a drainage hole and the soil is free-draining.

10. Accumulation of salts & chemicals in the soil

Accumulation of salts or chemicals in the soil will cause the roots to die and as such the plant cannot take up water to the leaves for food making which leads to reduced growth as well as flowering. These excess salts and chemicals may originate from watering with hard water or from the fertilizers used to feed the plant.

How to fix it

Water the Peace Lily with chlorine-free water only, like rain water, as they are sensitive to chlorine and other chemicals dissolved in water. Occasionally, flush out accumulated chemicals (salts) from the soil by running a stream of water through the soil. Allow the stream of water to run for some time and repeat the process several times.

11. Age of the plant

Peace Lily matures at the age of 1-2 years, therefore, a very young plant will not flower. As it grows older, from 5 years, blooming declines and stops completely at the maximum age of 10 years.

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