How To Grow A Peace Lily In Water (Hydroponic Method)

How To Grow A Peace Lily In Water (Hydroponic Method)

Peace lilies, scientifically known as Spathiphyllum, are a popular houseplant known for their elegant, lance-shaped, dark green leaves and distinctive white, hood-like flowers. They are easy to care for, requiring low to moderate light levels and consistent moisture to thrive, making them a great addition to indoor hydroponic gardens.

(Featured Image: Hydroponic Peace Lily)

This post contains affiliate links to the products mentioned. We earn a small commission from purchases made through these links. Thank you for your support!

What Is Hydroponic Gardening?

Hydroponic gardening is a method of growing plants without soil, using a water-based nutrient solution to deliver essential nutrients directly to the plant’s root system. This controlled environment allows for year-round cultivation of a wide variety of crops, from herbs and leafy greens to fruits and vegetables, in a space-efficient and resource-efficient manner.

Indoor hydroponic systems often utilize artificial lighting, such as LED grow lights, to provide the necessary spectrum for photosynthesis, enabling you to create ideal conditions for beautiful houseplants. This approach to gardening is gaining popularity due to its potential for higher yields, faster growth, and reduced dependency on traditional soil-based agriculture.

A hydroponic peace lily that is easy to grow indoors.

Hydroponic Peace Lily

How To Grow A Hydroponic Peace Lily

Growing a peace lily hydroponically can be a rewarding and efficient way to cultivate this popular indoor plant. Here are the steps to grow a peace lily hydroponically:

Materials You’ll Need:

  1. Peace lily plant
  2. Hydroponic system (such as DWC – Deep Water Culture, NFT – Nutrient Film Technique, or Kratky method)
  3. Hydroponic nutrient solution (We use Tiger Bloom nutrients by Fox Farm for all blooming plants)
  4. pH meter and pH adjusters
  5. Growing medium (optional, depending on the hydroponic system)
  6. Grow lights (we recommend a basic clamp light like this one by GoingTop)

Step-by-Step Guide:

  1. Select a Hydroponic System: Choose a hydroponic system that suits your needs and available space. Deep Water Culture (DWC) and Kratky methods are relatively simple and can be suitable for peace lilies.
  2. Prepare the Hydroponic Reservoir: Fill the hydroponic reservoir with water and add the appropriate hydroponic nutrient solution. Follow the manufacturer’s instructions for the correct dilution ratio.
  3. pH Monitoring: Check the pH level of your nutrient solution using a pH meter. Peace lilies prefer a slightly acidic pH level between 6.0 and 6.5. Adjust the pH using pH up or pH down solutions to keep it within the desired range depending on the type of water you use.
  4. Plant Preparation: Remove the peace lily from its soil and gently rinse the roots to remove any soil particles. Be careful not to damage the roots of the plant.
  5. Planting: Depending on the hydroponic system, you can either place the peace lily directly into the nutrient solution or use a growing medium like hydroton (clay pebbles) to support the plant in the system.
  6. Lighting: Provide adequate lighting for your peace lily. If natural light is insufficient, use grow lights with a spectrum appropriate for vegetative growth (blue spectrum) and flowering (red spectrum). Adjust the light intensity and duration to mimic the plant’s natural light requirements.
  7. Maintain Water Level: In a Deep Water Culture system, make sure the water level in the reservoir remains consistent, covering the roots at all times. In the Kratky method, allow the water level to decrease gradually as the plant consumes it.
  8. Monitor Nutrient Levels: Regularly check the nutrient solution’s strength using a TDS (Total Dissolved Solids) meter. Adjust the nutrient solution strength as needed by adding drops of liquid fertilizer or diluting your solution down.
  9. Pruning: Trim any yellow or dead leaves as they appear to encourage healthy growth.
  10. Pest and Disease Management: Keep an eye out for pests and diseases, and treat them promptly if they occur. Hydroponic environments are less prone to soil-borne issues, but it’s still important to be vigilant against pests like spider mites. Warmer temperatures and light can also algae growth, making consistent monitoring essential.
  11. Flowering: Peace lilies typically flower in response to changing light conditions. Adjust your grow lights’ spectrum and duration to encourage flowering when desired.
  12. Harvesting and Maintenance: Harvest flowers and deadhead spent blooms as needed to promote continuous flowering. Regularly check and maintain your hydroponic system, including cleaning and changing the nutrient solution when necessary.
  13. Make it Decorative: Hydroponic systems do not need to look industrial. You can choose an attractive table top system, like this system by ___, that seamlessly integrates hydroponic gardens with living spaces. Top your growing medium with decorative rocks to add a decorative flair to your setup.

Remember that peace lilies are sensitive to overwatering, so be cautious not to drown the roots in the nutrient solution. Proper care and attention to pH, nutrients, and lighting will help your peace lily thrive in a hydroponic system.

Light Requirements For An Indoor Hydroponic Peace Lily

Hydroponic peace lilies have similar light requirements to those grown in soil. They thrive in bright, indirect sunlight. Here are some guidelines for providing the right light conditions for hydroponic peace lilies:

  1. Indirect Light: Place your hydroponic peace lilies in a location where they receive bright, indirect light. This means they should be near a window but not in direct sunlight. Direct sunlight can be too intense and may scorch the leaves.
  2. Filtered Light: If you have a choice, filtered or diffused sunlight is ideal. You can achieve this by placing a sheer curtain or blinds between the plant and the window. This softens the intensity of the light while still providing adequate brightness.
  3. Artificial Lighting: If natural light is insufficient, consider using artificial grow lights. LED or fluorescent grow lights with a spectrum suitable for both vegetative growth (blue spectrum) and flowering (red spectrum) can work well for peace lilies. Keep the lights on for about 12-16 hours per day, simulating a day-night cycle.
  4. Light Intensity: Peace lilies can tolerate lower light conditions, but they will grow and flower more vigorously with higher light levels. Aim for a light intensity of about 100-200 foot-candles for optimal growth.
  5. Avoid Direct Sunlight: As mentioned earlier, avoid exposing hydroponic peace lilies to direct sunlight, especially during the hot afternoon hours. Direct sun can lead to leaf burn and other stress-related issues.
  6. Light Duration: Provide a consistent light schedule for your hydroponic peace lilies. Maintaining a regular day-night cycle is essential for the plant’s health and growth.
  7. Rotate the Plant: If your peace lily is in a location where it receives light from one direction, consider rotating the plant occasionally to ensure even growth and prevent one-sided leaning.
  8. Monitor Plant Response: Pay attention to how your peace lily responds to its light conditions during its active growing season. If the leaves start to turn yellow, it may be getting too much light, and you should move it to a slightly shadier location. Conversely, if it’s not flowering or growing well, it is getting too little light and may need a brighter location.

In summary, hydroponic peace lilies require bright, indirect light for healthy growth and flowering. Providing the right amount of light, whether through natural light, filtered sunlight, or artificial grow lights, is crucial for their well-being. Adjust the lighting conditions as needed to meet the plant’s specific requirements and maintain its overall health.

White and long-lasting flowers on a hydroponic peace lily.

Can You Keep A Peace Lily In A Glass Of Water?

While it is possible to temporarily keep a peace lily in a mason jar of distilled water for short periods or to propagate, it is not a suitable long-term solution for the plant’s growth and health. Peace lilies are not aquatic plants, and they require a more stable and nutrient-rich environment to thrive.

Here’s why you need a hydroponics system if you plan to keep peace lilies in water for an extended period of time:

  1. Nutrient Requirements: Peace lilies need nutrients from the soil to grow and stay healthy. Water alone does not provide the essential nutrients the plant requires for sustained growth.
  2. Root Rot: When kept in tap water for an extended period, the peace lily’s roots may become waterlogged and prone to rot. This can lead to the plant’s decline and eventual death.
  3. Limited Oxygen: Submerging the plant’s roots in water deprives them of oxygen, which is crucial for root health. Prolonged exposure to water can suffocate the roots.
  4. Unstable Environment: A glass of water is not a stable environment for a peace lily. It is prone to water temperature fluctuations and evaporation, which can stress the plant.

If you want to grow and maintain a happy plant, it’s best to plant it in a suitable pot with well-draining potting soil. Ensure that the pot has drainage holes to prevent overwatering, and water the plant when the top inch of soil feels dry. Providing the right growing conditions, including proper soil, light, and watering, will help your peace lily thrive and produce its beautiful white flowers.

Add Peace Lillies To Your Indoor Hydroponic Garden

Peace lily plants are primarily known for their elegant, dark green foliage and long-lasting white flowers, which symbolize peace and good luck. They are renowned for their air-purifying properties, effectively removing common indoor pollutants, making them a popular choice for improving indoor air quality. These flowering plants can thrive with enough light and and the right care, making them an elegant plant to house inside your home.

Hydroponic growing makes keeping peace lilies even easier by providing fresh water and essential nutrients to keep this low maintenance plant happy and healthy. Enjoying year of blooms with the peace lily flower in your home today!

Indoor peace lily kept in a hydroponic bowl.

Hydroponic Bowl For Peace Lily