This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases. If you click a link and make a purchase, I may receive a small commission at no extra cost to you.
Calla lilies can grow in water, but they need specific conditions to thrive this way.
Growing calla lilies in water is possible, but it requires careful attention to avoid rot and ensure the plant gets the nutrients it needs.
In this post, we’ll explore how calla lilies can grow in water, what you need to do to keep them healthy, and tips for successful water growth.
Let’s dive in and find out if and how you can grow a calla lily in water!
Why Calla Lilies Can Grow in Water
Calla lilies can grow in water because they are rhizomatous plants that normally thrive in moist environments.
1. Natural Habitat Supports Moisture
Calla lilies originally grow in naturally wet habitats like marshes and along the edges of ponds.
This natural adaptation means that they can tolerate very moist soil or even standing water for a period, making water growth feasible.
2. Rhizome Structure Allows Water Absorption
The calla lily’s rhizome is a thickened underground stem that stores nutrients and water.
This rhizome can survive submerged if it gets oxygen and nutrients, so growing them in water mimics their natural wet conditions.
3. Calla Lilies Can Absorb Oxygen from Water
While calla lilies prefer oxygen-rich soil, their rhizomes can absorb some dissolved oxygen from water, which supports their survival.
That said, stagnant water without aeration can cause problems, so water must be changed regularly or aerated.
4. Water Provides a Steady Supply of Moisture
Calla lilies prefer constant moisture — not too dry and not too soggy — and growing them in water ensures they never dry out.
How to Grow Calla Lilies in Water Successfully
To grow calla lilies in water successfully, you need to create the right environment and use proper techniques.
1. Choose Healthy Rhizomes
Start with a healthy calla lily rhizome that is firm and shows no signs of rot or damage.
Rhizomes that are shriveled or mushy won’t grow well in water.
2. Use the Right Container
Select a clear or translucent glass container that can support the rhizome above the water while allowing roots to dangle freely in the water.
A vase or jar works well. The key is the rhizome should stay partially out of the water to reduce rot risk.
3. Fill with Clean, Room Temperature Water
Fill your container with filtered or distilled water at room temperature; tap water with chlorine might harm sensitive roots.
Changing the water every few days helps prevent bacteria and algae buildup.
4. Position the Rhizome Correctly
Place the rhizome just above the water line so that the roots hang into the water but the main body stays dry to avoid rot.
Roots will grow faster this way, and the rhizome stays healthy.
5. Provide Bright, Indirect Light
Calla lilies grown in water need plenty of bright, indirect sunlight to thrive.
Avoid harsh direct sunlight that can overheat the water and plant. Moderate indirect light is ideal.
6. Keep Temperature and Humidity Stable
Maintain room temperatures around 60-75°F (15-24°C) with moderate humidity.
Extreme temperatures or drafts can stress the plant and slow growth.
7. Fertilize Sparingly
Since water lacks nutrients, add diluted liquid fertilizer every 2-4 weeks to supply necessary nutrients.
Avoid concentrated fertilizers as too much can burn roots.
Common Challenges When Growing Calla Lilies in Water
While calla lilies can grow in water, several potential challenges can arise that gardeners should watch out for.
1. Root Rot Risk
If the rhizome stays submerged too long without air, it can develop root rot which kills the plant.
Proper positioning above water and regular water changes reduce this risk.
2. Algae and Bacterial Growth
Stagnant water encourages algae and bacteria growth, making water murky and harming roots.
Using filtered water, changing water frequently, and clean containers help prevent this problem.
3. Slow or No Flowering
Calla lilies grown in water may take longer to flower compared to soil growth.
This is because they get fewer nutrients and limited root support for larger blooms.
4. Limited Nutrient Availability
Water alone doesn’t supply all the nutrients calla lilies need, so without fertilizer, plants may grow weak.
Regular feeding is essential for healthy foliage and flower production.
5. Temperature Sensitivity
Cold water or fluctuating room temperatures can stress calla lilies in water, causing stunted growth.
Keep the environment stable to avoid shock.
Additional Tips for Thriving Calla Lilies in Water
Following these extra suggestions can improve your success growing calla lilies in water.
1. Use Activated Charcoal
Adding a layer of activated charcoal to the bottom of the container filters impurities and discourages bacteria growth.
2. Clean the Container Regularly
Rinse your vase or jar before refilling with fresh water to keep the environment clean.
3. Prune Dead or Yellowing Leaves
Remove old or dying leaves promptly to keep the plant healthy and prevent decay in the water.
4. Change Water Frequently
Refreshing the water every 3-4 days prevents oxygen depletion and buildup of harmful organisms.
5. Repot in Soil if Necessary
If your calla lily isn’t thriving or flowering in water, moving it to moist soil is a good option for long-term growth.
So, Can a Calla Lily Grow in Water?
Yes, a calla lily can grow in water as long as it’s given the right conditions.
Positioning the rhizome just above the waterline, providing bright indirect light, using clean water, and occasional fertilizing are key to success.
While growing calla lilies in water has some challenges like root rot and limited nutrients, careful attention can keep your plant healthy and even blooming.
If you want a beautiful, unique way to display calla lilies indoors, growing them in water is a fun option worth trying.
With patience and proper care, your watery calla lily can thrive and brighten your space.
So go ahead and try growing your calla lily in water — it’s a refreshing take on plant care that can bring beauty and joy.