Can You Grow Lilies in Water? Steps, Types, and Troubleshooting

Yes, you can grow some lilies in water, but the answer depends heavily on which "lily" you're talking about. True water lilies (Nymphaea) are born for it and live their entire lives rooted in underwater pots with water above their crowns. Peace lilies and calla lilies can thrive with roots submerged or in water culture setups. But classic garden bulbs like Asiatic lilies and daylilies will rot if you keep their roots sitting in water long-term. Getting this distinction right upfront saves you a lot of dead plants.

Growing lily bulbs in water vs. true aquatic lilies: what you're actually dealing with

When people search for "lilies in water," they usually mean one of two very different things. The first is water culture, where you suspend a bulb, tuber, or rhizome in or just above water to encourage rooting before moving it to soil. Think of the vases of hyacinth or amaryllis you've seen on a windowsill. The second is actual aquatic lily growing, where the plant lives permanently in a pond, container water garden, or fountain. These are completely different setups, and confusing them is the number one reason people end up frustrated.

True water lilies (Nymphaea and related genera) are floating-leaved plants whose rhizomes stay rooted in soil underwater while their long petioles push leaves up to the surface. They are not hydroponics experiments. They need soil in a submerged pot, with water covering the crown. That's an aquatic system, not a vase of water. On the other side, Asiatic lilies and daylilies are fully terrestrial. Daylilies aren't even true lilies botanically. They belong to the genus Hemerocallis, not Lilium. Treating either of these like a water plant will kill them.

Which lily types actually work in water (and which ones don't)

Let me break this down by type so you don't have to guess.

Peace lilies are probably the most forgiving of all of these in water culture. I've kept them in glass vases for over a year with nothing but water and a bit of liquid fertilizer, and they stayed healthy and even flowered. Calla lilies naturally grow in marshy ground near streams and ponds, so wet roots are fine, but you don't want the tuber fully submerged for months on end or it will eventually rot. Asiatic and Oriental lilies from bulbs can be started in water to encourage root development, but think of that as a temporary nursery stage, not a permanent home.

How to set up water culture for lily bulbs, tubers, and rhizomes

What you need before you start

• A clean glass vase, mason jar, or opaque container (opaque is better for preventing algae)
• Room-temperature, filtered or settled tap water (let chlorinated tap water sit uncovered for 24 hours before using)
• A lily bulb, tuber, or rhizome in good condition with no soft spots or visible mold
• Toothpicks or a bulb vase with a built-in neck to suspend the bulb (for the suspension method)
• Liquid fertilizer formulated for hydroponic or water growing (optional but helpful after roots appear)

Step-by-step for rooting a bulb or tuber in water

1. Inspect your bulb or tuber. Firm and dry with no soft, mushy, or discolored sections. Trim any obviously dead roots with clean scissors.
2. Fill your container with room-temperature water. If using a regular jar, use toothpicks to suspend the bulb so the base just touches or sits about half an inch above the water line. The basal plate (the flat bottom where roots emerge) should face down, toward the water.
3. Place the setup in a bright spot with indirect light. Avoid direct sun at this stage, which can overheat the water and encourage rot.
4. Check water level every 2–3 days and top off as needed. Change the water completely every 1–2 weeks to prevent bacterial buildup.
5. Wait for roots to appear. For most Lilium bulbs this takes 2–4 weeks. Peace lily roots in water appear faster, often within 1–2 weeks.
6. Once roots are 2–3 inches long and the plant is showing green growth, you can either continue in water culture (for peace lilies and callas) or pot up into soil (for Asiatic and Oriental lilies).
7. If continuing in water, add a few drops of liquid fertilizer formulated for hydroponics or aquatic plants every 2–4 weeks. Standard soil fertilizer can burn roots in a water system.

Setting up a permanent water container for true water lilies

True water lilies need a completely different approach. You're not suspending a bulb in a vase. You're planting a rhizome into a container of heavy clay or aquatic potting mix, then submerging that entire pot in water. The Missouri Botanical Garden recommends at least 6 inches of water above the crown, with 8–10 inches being a solid target for most hardy varieties. Use a wide, shallow pot (think dish or tub, not a deep bucket) and avoid potting mixes that float or contain a lot of perlite. Cover the soil surface with a layer of pea gravel to keep the mix from clouding the water. If you're growing water lilies in a container water garden rather than an in-ground pond, this same setup applies.

Water, oxygen, and light: getting the conditions right

Water quality matters more than most people expect. Stagnant, warm, nutrient-rich water is a recipe for algae blooms and bacterial rot. For bulb water culture indoors, fresh water every one to two weeks is the minimum. The water temperature should stay between 60 and 75 degrees Fahrenheit. Anything below 55°F and root development stalls. Above 80°F and you're inviting rot and fungal growth.

Oxygen is a real concern in still water. Roots need dissolved oxygen, and a sealed container of standing water will deplete it over time. For indoor water culture setups, a small aquarium air pump with an air stone costs around 10 to 15 dollars and makes a measurable difference in root health. For outdoor container water gardens with water lilies, surface agitation from a small fountain or waterfall keeps oxygen levels healthy, though water lilies actually prefer calmer water than lotus does.

Light requirements vary a lot by species. Peace lilies do well in bright indirect light and can handle a north-facing window, needing around 2–4 hours of indirect light per day. Water lilies are sun-hungry plants that need a minimum of 6 hours of direct sunlight daily to bloom reliably. If your outdoor container water garden sits in a shady spot, your water lily will grow leaves but likely won't flower. Asiatic lily bulbs being started in water before transplanting don't need intense light yet, just bright indirect light while rooting.

Troubleshooting the most common problems

Yellowing leaves

Yellow leaves on a peace lily in water are usually a sign of nutrient deficiency. Plain water has no nutrients. Once roots are established (roughly 3–4 weeks in), start adding a diluted liquid fertilizer every 2–4 weeks. If the yellowing is happening faster and the leaves look mushy or translucent at the base, you've got rot, and the cause is almost always stagnant water or a damaged bulb you didn't catch at the start.

Rot and mold

Soft, brown, slimy sections on a bulb or tuber in water need immediate action. Pull the bulb out, cut away every soft section with a clean blade, and let the cut surface dry in the air for a couple of hours before returning it to fresh water. If more than half the bulb is affected, it's unlikely to recover. Mold on the container walls or waterline is easier: scrub it with a diluted bleach solution (1 part bleach to 10 parts water), rinse thoroughly, and refill with fresh water.

Algae growth

Green algae in your container is a sign of too much light hitting the water directly, especially in clear glass containers. Switch to an opaque vase or wrap the outside of your clear container with dark paper or fabric. In outdoor water gardens, some algae is normal and even healthy, but if it's taking over, check that you have adequate surface coverage from lily pads (water lilies prefer 50–70% surface coverage) and consider adding a few snails or fish if the container is large enough.

No root growth after several weeks

If you've had a bulb suspended in water for 4–6 weeks with no visible root development, a few things could be wrong. The water might be too cold (below 60°F). The basal plate might not actually be making contact with or close proximity to the water. Or the bulb might simply be a low-quality or old specimen that won't sprout. Try moving it to a warmer spot and double-check that the base is correctly oriented. If nothing happens after 8 weeks, that bulb is done.

Pests

Water culture setups are mostly pest-free for indoor plants because you're removing the soil where most pests live. That said, peace lilies in water can still get spider mites or mealybugs on their leaves. Wipe leaves with a damp cloth and treat with insecticidal soap spray if you spot infestations. For outdoor water lilies, aphids and water lily beetles are the main pests. A strong blast of water from a hose knocks aphids off leaves into the water where fish will eat them. Serious beetle infestations may need a targeted aquatic-safe insecticide.

When and how to move your lily from water to soil

For Asiatic and Oriental lily bulbs that you started in water, the window for moving to soil is when roots are 2–3 inches long and you can see the first tip of a green shoot emerging from the nose of the bulb. That's usually 3–6 weeks after starting. Don't wait much longer than that. The longer a terrestrial lily bulb sits in water past that point, the harder the transition becomes and the more likely you are to see stunted growth.

To move, prepare a pot with well-draining potting mix. Plant the bulb at a depth roughly 2–3 times its diameter. Water it in well and keep the soil consistently moist but not waterlogged for the first two weeks while it adjusts. Don't fertilize immediately. Give it about three weeks in soil before introducing any fertilizer so the tender new roots aren't burned.

If you're moving a calla lily or peace lily from a water vase to soil, the process is gentler because these plants are more adaptable. Plant into a peat-free potting mix, water well, and keep it in the same light conditions it had in water for the first week or two. Gradual acclimation matters more than speed here.

For outdoor timing, the general rule is to move or plant out after your last frost date. In USDA zones 5–6, that's typically mid to late May. In zones 7–9, late March to April works. Don't rush outdoor placement. A late frost hitting a lily that was just transitioned from a warm indoor water setup is a quick way to lose the whole plant.

Mistakes that kill lilies in water (and how to avoid them)

• Using cold tap water straight from the faucet: water below 55°F shocks roots and stalls growth. Always use room-temperature water and let chlorinated tap water off-gas for 24 hours first.
• Letting the bulb sit fully submerged: for Asiatic, Oriental, and calla lily bulbs, the body of the bulb should never be underwater. Only the roots or basal plate should be near or touching the water.
• Never changing the water: stagnant water depletes oxygen, builds up bacteria, and leads to rot. Change it every 1–2 weeks.
• Putting the wrong plant type in water: trying to grow Asiatic lily bulbs or daylily crowns long-term in water is a losing battle. Know your plant before you set up your system.
• Using full-strength fertilizer in water culture: nutrient concentration that works in soil is far too high for water culture. Always use a diluted hydroponic formula.
• Skipping aeration: a small air pump or even moving the water slightly every day makes a real difference in root health for indoor water culture setups.
• Ignoring water temperature: water above 80°F (common in outdoor containers in summer) creates conditions where rot and algae thrive. Use shade cloth or partial shading for outdoor setups in hot climates.

Your next steps starting today

If you want to try water culture with a peace lily, pick up a glass or opaque vase and a bottle of diluted liquid hydroponic fertilizer. Get a healthy plant, rinse all the soil off the roots, and set it up with room-temperature water covering just the roots. You'll likely see healthy growth within two weeks with minimal effort. It's genuinely one of the easiest water-culture setups you can do.

If you're after water lilies in a container pond or small water feature, the setup is more involved but very doable. You need a wide, shallow container (at least 15–20 gallons for a dwarf variety), aquatic potting mix, a water lily rhizome from a reputable nursery, and a spot that gets at least 6 hours of direct sun. Plant the rhizome into the pot, submerge it so there's 6–10 inches of water over the crown, and watch it grow. Questions about whether water lilies can grow in a simple pot setup, or whether a fountain's moving water is suitable, are worth exploring separately since the water movement and container size factors change the equation noticeably. If you are wondering whether can water lilies grow in saltwater, start by matching the plant’s salt tolerance with the salinity level of your water garden. A moving fountain changes the oxygen and water-depth details, so it helps to confirm whether water lilies can thrive in that setup can you grow water lilies in a fountain. If you’re wondering whether can you grow water lilies in a pot without a traditional pond, you’ll just want to match the right container size, potting mix, and water depth. Water lilies can grow in just water too, but they need the right setup for their rhizomes and enough depth above the crown.

For Asiatic lily bulbs, use the water-start method only as a rooting technique before planting into soil. Set up your vase in late winter or 6–8 weeks before your last frost date, give it time to root, and then transplant. You'll often get stronger, earlier growth than direct bulb planting, and you get to watch the root development happen in real time, which is genuinely satisfying.

Check your setup every 2–3 days for the first month. Look at the water color (clear is good, cloudy or greenish means change it), the roots (white and firm is healthy, brown and mushy means trouble), and the leaves (upright and green means it's working). If something looks off, act early. Problems in water culture escalate faster than in soil because there's less of a buffer. Catch rot or stalled growth in week two and you can usually recover. Wait until week six and you're usually starting over.