Peace Lily Not Flowering? These 10 Mistakes Could Be the Reason

Stephanie is a Senior Horticulturist specializing in tropical plants, succulents, and herbs. She combines her love of plants and words to create informative and engaging content for readers.
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Trying to get your peace lily to bloom, but can’t get the desired results? These mistakes could be the reason for the lack of flowers!

Peace Lily Not Flowering? These Mistakes Could Be the Reason

Peace lilies steal the show with their unusual, white colored spathes. But what good is one with no blooms at all? Getting your peace lily to flower is an intricate process in which the slightest of mistakes can reduce the number of blooms.

Even if your plant appears healthy, these subtle errors may be compromising its flowering potential. Read on to know if you are committing these grave errors that take away from the beauty of this white flowering houseplant!


Mistakes that Reduce Peace Lily Flowering

1. Insufficient Sunlight

Peace Lily Not Flowering? These Mistakes Could Be the Reason 2

While it is true that mature and established peace lilies thrive in deep shade, these conditions will not help them bloom. Keeping them in a dark room 24/7 is a mistake that many indoor gardeners make, resulting in a lack of flowers. 

Too little light slows down the photosynthesis process, and without enough energy, your plant simply won’t produce blooms.

To encourage blooming, place your plant in a partially lit room for at least a couple of hours to boost the photosynthesis process. The best location would be an east-facing windowsill. Even morning sunlight filtered through a curtain can make a noticeable difference.

A simple test to know whether the location in which your peace lily is growing is optimal for its blooming is the read test. Try reading a book without an artificial source of light near it. If you can without straining your eyes, the light exposure is correct.

Note: Do not place the plant under direct sunlight as its sensitive leaves may be scorched due to the intensity.

2. Underwatering

Peace Lily Not Flowering? These Mistakes Could Be the Reason 3
reddit

Everyone knows that water is the elixir of life for plants. It helps transport nutrients from one part of the plant to the other, among various other vital functions. So if you happen to deprive your peace lily of water, it will not thrive, let alone bloom!

Keep in mind that peace lilies love moist soil, so watering them once every 7-10 days is a must. A cool way to ensure equal and thorough saturation of the soil would be bottom watering.

A quick way to find out if your plant needs water is to poke your finger into the substrate. If the top 1 inch of the soil feels dry, it’s time to water! Much better if you can use a moisture meter.

3. Overwatering

This is the exact opposite scenario of the previous mistake. When beginner gardeners find out that peace lilies love moist soil (as iterated in the last point), they overdo it and end up leaving them in soggy soil conditions. The wet feet then lead to root rot, fungal infection, and harbor pests.

Your peace lily might look limp or yellow despite the excess water, which is a key indicator that something’s wrong. Try lifting up the pot gently! If it is unusually heavy or if there is an excessive leakage, you may have pooled water at the bottom of the container. 

All of these issues will hamper blooming. It may be tricky to get the sweet spot for watering, but in general, water the plant once a week. You can even use a moisture meter, which tells the exact saturation level of the substrate.

4. Lack of Nutrients

fertilizer

Did you know that regular potting mix may not provide sufficient nutrients to support healthy spathe production? Phosphorus and potassium, along with micronutrients such as magnesium and calcium, are necessary for blooms.

Even a well-lit, well-watered peace lily won’t flower without proper nourishment. Here is where fertilizers come to the rescue! Use a liquid fertilizer of the NPK ratio 5:10:10 diluted to half its strength to focus more on blooms.

Apply the fertilizer once every 4-6 weeks in the active growing season and halt it entirely during the winter. 

Note: Remember to use a fertilizer low in nitrogen content as this promotes lush foliage growth and not flowers. Maybe try these ultimate recipes!

Pro Tip: Flush the soil out completely every 2-4 months to leach out excessive fertilizer buildup.

5. Improper Environment

The environment plays an important role in determining the health of a peace lily. These tropical plants thrive in warm conditions, ranging from 65°F to 85°F (18°C to 30°C). Anything below that will slow down growth and halt blooming. Remember that potting mixes with low or very high water retention can cause silent stress to your plant. 

Also, pay attention to the quality of water being used. Hard and contaminated water will misbalance the pH and nutrient levels of the soil. If you spot white residue left behind on the leaves, replace the regular tap water with distilled, rainwater, or filtered water.

Remember that, being tropical plants, they also love above-average humidity levels (50-60%); misting or using humidifiers is a must. You can use a hygrometer to accurately note the air moisture level.

6. Not Removing Spent Blooms

Not Removing Spent Blooms

Sometimes letting go of the peace lily blooms is the way to get more! Dying or spent spathes need to be removed to allow the plant to redirect its energy to producing healthier and more bracts.

Pruning away yellowing or damaged foliage is also necessary. Simply use a pair of scissors and cut off the leaf or flower right at the base or stalk, just above the leaf node. The plant will gradually replace the pruned portion with fresh growth.

7. Wrong Pot Size

peace lily repotting
reddit

Getting the right pot size for peace lilies is like threading a needle. It can be quite confusing because a pot too small will leave no room for the roots to grow. On the other hand, if the pot is excessively large, the soil will retain too much moisture and invite diseases. 

In most cases, a 4-5 inches pot will suffice for a starter plant, but you must increase the size by 2 inches each repotting session. Only repot the plant when you see roots sticking out of the drainage holes at the bottom of the container.

A rule of thumb is that the container should be no more than 1-2 inches larger in diameter than the root ball of your peace lily. Too much room in the pot diverts energy to root development rather than bloom production.

8. Acclimatization Shock

Peace Lily pot on table near sofa

A peace lily can refuse to grow or produce spathes for a while after being repotted or shifted to a new location. This is because the root system needs to stabilize while the shoot must adapt to the new environment.

Clear signs of transplant shock are stunted or no growth, drooping foliage, and a lacklustre appearance for a couple of weeks after the repotting process is complete. 

During this period, it is essential to let the plant be and provide it with basic care. Once it acclimatizes, it will automatically begin to grow and produce blooms. Avoid fertilizing and moving it while providing just the right amount of water during this time.

9. Pest Attack

peace lily prune

Pests have always been the enemies of plants and gardeners! If you notice that your peace lily is not blooming, consider checking for a pest infestation. Mealybugs hide in the dense foliage and slowly suck the life out of your plant, literally!

You must constantly check the undersides of the leaves, keeping an eye out for sticky residue, cotton-like patches, or crawling bugs.

Use preventive methods, like improving the air circulation and regular pruning, to control an infestation. However, if it has already occurred, use pesticides like neem oil to eliminate the bugs. In severe cases, you may also need to completely remove the damaged portion of the plant. 

10. Just Wait

Peace lilies do not have a fixed bloom time. That’s why it can be frustrating to keep track of when it’s resting or flowering. Since there is no particular season for it to bloom indoors, constantly changing its growing conditions to force it to flower can add unnecessary stress.

You need to realise that your plant may just need time to revitalize. A few months of fewer flowers (especially in fall and winter) shouldn’t be an issue, and there is no need to panic.


With a bit of patience and the right care, your peace lily will reward you with beautiful white bracts once again. Keep these tips in mind, and soon your plant will be back to its glory days!

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