Can calathea grow in water? Calathea in water doesn’t work from leaf or stem cuttings, because new plants grow only from the rhizome. Instead, divide a clump so each piece has roots, rhizome and a few leaves, rinse off the soil and set the roots in clean, low-mineral water. Keep it at 65–75°F (18–24°C) with high humidity and indirect light.
Key takeaway: Grow calathea in water from divisions, not cuttings. Use distilled or rainwater, because tap water can damage calathea leaves.
| Approach | Works? | Why |
|---|---|---|
| Single leaf or stem in water | No | No rhizome, no growing point |
| Division with rhizome and roots | Yes | NC State lists division as the method |
| Whole plant moved to water | Sometimes | Roots must adapt; some die back |
| Division in moist potting mix | Most reliable | Matches NC State care advice |
Why Won’t Calathea Cuttings Root in Water?
Calathea grows from underground rhizomes, not from nodes along an upright stem. NC State Extension describes Goeppertia (many species formerly called Calathea) as clump-forming with rhizomatous roots and says the plants are propagated by division. A leaf stalk cut from the clump has no bud to make new shoots, so it may stay green for a while in a jar but won’t become a plant. This is the main reason “calathea in water” attempts fail.
Is Calathea the Same as Goeppertia?
Mostly. NC State notes that genetic studies moved many Calathea species to Goeppertia, though plant tags and books still use Calathea. Both are in the prayer plant family (Marantaceae) and fold their leaves at night, a movement NC State calls nyctinastic. Care advice applies to both names.
How Do You Divide Calathea for Water Growing?
- Wait for spring. NC State recommends repotting annually or every two years, preferably in spring.
- Water the plant a day before so roots are supple.
- Slide it out of the pot and shake off loose soil.
- Find natural clumps, each with several leaves and its own roots.
- Separate gently by hand, or cut the rhizome with a clean knife where needed.
- Rinse the roots under lukewarm water until no soil remains.
- Trim damaged roots with clean scissors.
- Set roots in water, keeping the rhizome and leaf bases above the waterline.
What Water Is Best for Calathea in Water?
Distilled water or rainwater. NC State specifically says to avoid tap water, which can damage the plant’s leaves, and recommends distilled or rainwater. Minerals and fluoride build up faster in a jar than in soil, so this matters more for calathea in water than for potted plants.
- Distilled: Clean and mineral-free; add dilute fertilizer for long-term growth.
- Rainwater: Free and low in salts; collect from a clean source.
- Reverse osmosis: Similar to distilled.
Read more in our guides to fluoride in water for plants and rainwater for hydroponics.
How Do You Care for Calathea in Water?
Match NC State’s care conditions as closely as possible:
- Temperature: 65–75°F (18–24°C); avoid drafts and sudden changes.
- Light: Indirect or medium to low light; direct sun fades and burns leaves.
- Humidity: High. NC State suggests a tray of wet pebbles or a humid room like a bathroom or kitchen.
- Feeding: NC State advises half-strength fertilizer only in the growing season for potted plants. In water, go weaker, about quarter strength.
- Water changes: Every week, rinsing the container.
- Leaf cleaning: NC State notes dust slows photosynthesis; wipe leaves with a soft, damp cloth.
Why Is My Calathea in Water Curling or Browning?
- Tap water minerals: Brown, crispy edges; switch to distilled or rainwater.
- Low humidity: NC State links brown leaf edges to low humidity; raise it.
- Cold: NC State says cold exposure and overwatering cause rotting stems and drooping leaves.
- Too much sun: Faded, scorched patches.
- Root rot: Mushy roots and a sour smell; trim and change water.
- Overfeeding: Brown tips spreading inward; flush with fresh water.
See why roots turn brown for help diagnosing root problems.
Can Calathea Live in Water Permanently?
Some growers keep calathea in water or semi-hydro for long periods, but it’s demanding. The plant needs steady nutrients, clean low-mineral water and high humidity. Semi-hydro in clay pebbles keeps the rhizome drier and roots better aerated than a plain jar. NC State’s standard advice is moist, well-drained, rich potting mix that isn’t soggy, so soil remains the easier long-term option.
How Long Does Calathea in Water Take to Adjust?
Expect a few weeks of adjustment. Soil roots often die back while new, finer water roots grow. Remove any that turn brown and mushy. New leaves unfurling from the center mean the division has settled. A clear bag loosely over the plant helps it through the first week.
What Pests and Diseases Affect Calathea in Water?
NC State lists aphids, scale, mealybugs and spider mites as potential pests, and notes that airborne fungal infections such as gray mold can occur. Its advice is to remove infected parts and improve ventilation. Check leaf undersides weekly, especially in dry winter air when spider mites build up. Rinse leaves in lukewarm water or wipe them with a damp cloth to knock pests back. Keep water off the leaf bases, since constant moisture at the crown invites rot.
When Should You Move Calathea in Water to Soil?
Move it if leaves keep browning despite good water, if roots stay thin and few after a month, or whenever you prefer easier care. Use a rich, well-drained potting mix that stays moist but not soggy, as NC State advises. Pot at the same depth, water with distilled or rainwater and keep humidity high for two weeks. Expect a pause in growth while water roots adapt to soil; don’t overwater during that time.
Is Calathea Safe for Pets?
The ASPCA lists the prayer plant entry, which names Calathea insignis, as non-toxic to dogs, cats and horses. Keep jars stable and out of reach anyway, since pets may drink stale water or knock them over.
What Container Works Best for Calathea in Water?
Use a wide-mouthed glass or vase that holds the rhizome above water, or a net pot set in a cachepot. Tinted or covered containers reduce algae. Our article on algae in reservoirs explains why light and nutrients cause green water.
FAQs
Can I root a calathea leaf in water?
It may grow a few roots but won’t produce a new plant.
Can calathea in water get too much light?
Yes. NC State recommends indirect, medium to low light.
How often should I change the water?
Weekly, or sooner if it clouds or smells.
Why do the leaves move at night?
NC State says the leaves fold in response to darkness.
Do I need rooting hormone?
No. Divisions already have roots.
Sources
- North Carolina State Extension — Goeppertia (Calathea)
- ASPCA — Prayer Plant (Toxic and Non-Toxic Plants)
- Photo credits (Wikimedia Commons, edited with titles): Calathea warscewiczii – Wilhelma by H. Zell (CC BY-SA 3.0); Maranta leuconeura ‘Marisela’ by KATHERINE WAGNER-REISS (CC BY-SA 4.0); US Navy 050107-N-0057P-246 Aviation Electronics Technician 2nd Class Jason D. Schapp of Oakridge, Ore., and members of the Indonesian Army unload jugs of water that were purified in distilling plant aboard USS Abraham Lincoln ( by U.S. Navy photo by Photographer’s Mate 2nd Class Seth C. Peterson (Public domain); Basilikum (Ocimum basilicum) Stecklinge — Josef Schlaghecken by Schlaghecken Josef (CC BY-SA 4.0); Hydroton by Lucis (CC BY-SA 3.0)