Monstera Hydroponics: How to Grow It in Water or LECA

Monstera deliciosa grows well in hydroponics, either in plain water or in an inert medium like LECA clay balls, because its roots readily adapt to a soil-free environment.

Success depends on rinsing all soil from the roots before conversion, changing the water on a regular schedule, and using a fertilizer formulated for hydroponics, since water alone does not supply the nutrients soil normally would.

You have seen the photos: a monstera cutting suspended in a clear glass vase, roots trailing through the water like something out of a design magazine.

So you tried it, plopped a rooted plant straight into a jar of tap water, and within a couple of weeks the roots had gone slimy, the water had turned cloudy, and one leaf had yellowed and dropped.

The plant itself was never the problem. Skipping the setup was.

Monstera actually converts to hydroponics more easily than most houseplants, but there is a real process behind those clean glass-jar photos, one that involves water chemistry, a fertilizer formulated for a soil-free environment, and a maintenance rhythm that has nothing to do with how you were watering it in soil.

This guide covers what hydroponics and semi-hydroponics actually mean for a monstera, how to convert a plant properly, what ongoing care looks like, and the specific problems that show up in water that never show up in soil.

Hydroponics vs. Semi-Hydroponics: What’s the Difference for a Monstera

Hydroponics, from the Greek for water and labor, technically covers any method of growing a plant without soil.

In practice, houseplant owners use it in two distinct ways, and the distinction matters for how you set the plant up.

True water culture means the roots sit directly in a reservoir of nutrient-enriched water, typically in a clear glass or ceramic vessel, with no solid medium at all.

Semi-hydroponics, most commonly using LECA (Lightweight Expanded Clay Aggregate), grows the plant in a bed of small, porous fired-clay balls that wick water up from a reservoir at the base while still giving the roots something solid to anchor into and plenty of air contact.

Both remove soil from the equation entirely, but LECA behaves more like a self-watering, low-maintenance middle ground, while pure water culture demands more frequent attention and gives you the clearest view of root health.

If you only want to root and grow a single cutting in a jar of water rather than convert an entire mature plant to a permanent soil-free system, this guide to growing monstera in water only covers that narrower, lower-commitment approach in more detail.

Why Hydroponics Works So Well for a Monstera

In soil, a monstera’s roots spend a meaningful amount of energy searching for water and nutrients, spreading and branching to find what they need.

In water or an inert medium with a maintained nutrient solution, that search is over before it starts, since everything the roots need is already dissolved and immediately available.

The energy the plant would have spent foraging gets redirected into leaf and stem growth instead, which is the main reason hydroponic monstera often puts out new leaves faster than the same plant would in soil.

The second advantage is about what is absent rather than what is present.

Fungus gnats and the fungal pathogens behind root rot both depend on damp, organic soil to complete their life cycle.

Remove the soil and you remove the habitat, which is why hydroponic monstera are far less prone to both. I

f either of those has been a recurring issue for your plant, this guide to the most common monstera pests and this walkthrough on fixing root rot both cover why a habitual overwaterer in particular tends to see the biggest improvement after switching to hydroponics.

The Trade-offs Nobody Mentions

Hydroponics is not a strict upgrade over soil, and the downsides are less about plant health and more about maintenance load and appearance.

Algae is the most immediate one. Any clear container holding nutrient-rich water in a lit room will grow algae eventually, since it needs exactly the same things your monstera does.

It will not harm the plant, but it clouds the water and coats the inside of the glass.

An opaque or dark-tinted container solves this by blocking the light algae needs, at the cost of losing the visual appeal of a clear vase.

Frequent water changes are the second cost. Pure water culture needs a full water change roughly weekly, since standing water depletes of dissolved oxygen and accumulates the plant’s own waste products between changes.

LECA is more forgiving, generally needing a full flush only every few weeks, because the medium buffers those changes better than open water does.

The conversion itself is also a genuine shock to the plant.

Soil roots and water roots are structurally different, and a plant moved from one to the other will shed some of its old, soil-adapted roots while growing new water roots to replace them.

Expect a slower few weeks immediately after conversion, sometimes with a dropped leaf or two, before growth resumes.

Converting a Soil-Grown Monstera to Water Culture

Step 1: Choose the Right Container

A clear glass or ceramic vessel works best, both because you can monitor root health at a glance and because it holds the plant upright without support.

Avoid metal containers entirely. Metal leaches ions into the water that can build up to toxic levels over time, something soil would normally buffer but water does not.

This guide to choosing a monstera pot covers sizing and material considerations that still apply even when you are picking a vessel rather than a traditional planter.

Step 2: Remove and Rinse the Roots Thoroughly

Ease the plant out of its pot and gently work as much soil as possible away from the root ball by hand, then rinse the rest away under lukewarm running water until the roots run clear.

This step matters more than it looks. Any soil left clinging to the roots will decompose in standing water, feeding bacteria and clouding the reservoir within days.

While the roots are exposed, it is also the easiest moment to check them over, since anything soft, dark, or foul-smelling should be trimmed away with clean scissors before the plant goes into water.

If you find extensive damage at this stage, treat it as root rot first using our root rot recovery guide and hold off on the hydroponics conversion until the plant has stabilized.

Step 3: Get the Water Right Before the Plant Goes In

Use distilled, filtered, or rainwater rather than water straight from the tap.

Chlorine and chloramine, both common tap water treatments, can irritate the fine root hairs that a monstera needs to establish in its new water roots.

If a lab test or test strip is available, the University of Missouri Extension’s guidance on hydroponic nutrient solutions places the workable pH range for most hydroponically grown plants between roughly 5.5 and 6.5, which holds true for monstera as well.

Water outside that range makes nutrients less available to the roots even when the fertilizer dose itself is correct, so it is worth checking if growth stalls later on despite regular feeding.

Step 4: Submerge the Roots, Not the Stem

Add enough water to fully submerge the root system while keeping any lower leaves and the base of the stem above the waterline.

A stem sitting in standing water is prone to rot in a way the roots themselves are not.

Trim off any leaves that would otherwise sit below the new waterline before you finish setting the plant in place.

Step 5: Place It in the Same Light It Would Need in Soil

Converting to hydroponics changes nothing about a monstera’s light requirements.

It still wants bright, indirect light, and direct sun through a window can scorch the leaves exactly as it would in soil, sometimes faster given a clear container reflecting extra light back onto the foliage.

Monstera’s full light requirements and whether direct sunlight is ever appropriate are both worth reviewing before you settle on a permanent spot, since a hydroponic plant is just as vulnerable to a sunny windowsill as a potted one.

Converting to LECA or Semi-Hydroponics

The setup differs from pure water culture in a few specific ways, even though the underlying goal, bare roots in a soil-free medium, is the same.

1. Rinse new LECA thoroughly under running water to remove clay dust, then soak it for several hours to a full day until the balls stop floating, which indicates they have absorbed as much water as they will hold.
2. Choose a container without drainage, since LECA relies on a standing water reservoir at the base, or use a net pot nested inside a decorative outer pot to combine the reservoir with a more attractive presentation.
3. Bare-root the plant exactly as described above for water culture, rinsing all soil from the roots before it goes anywhere near the LECA.
4. Fill the container roughly a third to halfway with LECA, position the plant so the root mass sits in the upper two-thirds of the container, then backfill around the roots with more LECA until the plant stands upright unsupported.
5. Add water to the reservoir until it reaches roughly the bottom third of the LECA layer, well below the lowest roots, since LECA wicks moisture upward and the roots should never sit directly submerged the way they do in pure water culture.

From here, ongoing care converges with water culture in most respects, with one meaningful difference: because LECA is inert and holds no nutrients of its own, exactly like plain water, the feeding schedule below applies equally to both.

Ongoing Care: Water Changes, Fertilizer, and Monitoring

Full water changes on a pure water culture setup should happen roughly weekly.

Standing water loses dissolved oxygen and accumulates the plant’s own root exudates over that time, and a fresh change resets both.

LECA needs a complete flush, reservoir drained and refilled, only every three to four weeks, topping up with plain water in between as the reservoir runs low.

Because there is no soil to buffer nutrient availability, a monstera in hydroponics needs a fertilizer formulated specifically for hydroponic or semi-hydroponic use, mixed at roughly a quarter to half the labeled strength for soil use.

A standard soil fertilizer dosed at full strength in water alone tends to build up salts far faster than the same dose would in a buffered soil medium, which brings you back to the pH and nutrient availability issues covered above.

Our guide to fertilizing a monstera covers dosing in more depth if you are adapting an existing soil feeding routine to a hydroponic schedule.

Humidity and temperature needs do not change with the growing medium.

Monstera’s ideal humidity range still applies, and a plant sitting in a jar of water is not automatically getting the ambient moisture its leaves also need from the air around it.

Troubleshooting a Hydroponic Monstera

Yellowing Leaves After Conversion

A single yellow, dropped leaf in the first two to three weeks after conversion is usually transition shock, the plant shedding a soil-adapted leaf while it establishes new water roots, and it resolves on its own.

Yellowing that continues beyond that window or spreads to multiple leaves points to something else, most often a nutrient deficiency in the water or a pH sitting outside the workable range described earlier.

This guide to monstera leaves turning yellow covers the wider set of causes if the timing does not line up with a recent conversion.

Slimy or Rotting Roots

Healthy water roots are firm, often a lighter, almost translucent white or tan compared to the browner, wirier roots the plant had in soil, and they should have no smell.

Roots that have gone soft, dark, or slimy with a distinct rotten odor indicate bacterial buildup, usually from water that has gone too long between changes or from soil residue left behind during conversion.

Trim away the affected roots with clean scissors, change the water immediately, and shorten the interval between water changes going forward.

If the rot has spread extensively, treat it with the same protocol as soil-based root rot, since the underlying cause, oxygen-starved roots sitting in stagnant conditions, is the same whether the medium is soil or water.

Persistent Algae

Algae growing on the inside of the container or around the roots is unsightly but not harmful to the plant.

If it bothers you, switch to an opaque or dark-tinted container, since algae needs light to grow and a container that blocks it will starve the algae out within a couple of water changes without affecting the monstera at all.

Stalled Growth With No New Leaves

If a hydroponic monstera has been stable for over a month with no new growth, work through light, fertilizer concentration, and water pH in that order, since any one of the three being off is enough to stall growth even when the other two are correct.

This general troubleshooting guide for a monstera that has stopped growing covers the wider diagnostic process if the hydroponics-specific checks above do not turn up an obvious cause.

Hydroponics vs. Soil: Which Should You Choose

Neither approach is objectively better.

A monstera in well-draining potting soil with the right mix and a sensible watering schedule grows just as well as one in water, and switching mainly makes sense if overwatering has been a recurring problem for you specifically, or if the aesthetic of visible roots and a soil-free setup is part of the appeal.

Can a Monstera Live in Water Forever?

Yes, provided the maintenance holds up. Water and LECA supply none of the nutrients soil normally would, so a plant left in either for years without a hydroponic fertilizer will gradually show the signs of nutrient depletion, smaller new leaves, slower growth, and eventual yellowing, typically starting to appear after two to three years of inconsistent feeding.

Regular water changes and a properly dosed hydroponic fertilizer prevent this indefinitely, and there is no upper limit on how long a monstera can stay in a soil-free setup as long as those two habits stay consistent.

Frequently Asked Questions

Can you really grow a full-size monstera in water, not just a cutting?

Yes. A mature, soil-grown monstera can be bare-rooted and converted to full hydroponic culture at any size, not just as a rooting cutting.

The conversion shock is the same regardless of plant size, though a larger, more established root system generally adapts a little faster than a very young cutting with few roots to begin with.

How often should I change the water for a hydroponic monstera?

Roughly once a week for pure water culture, and every three to four weeks for a LECA or semi-hydroponic setup, topping up the reservoir with plain water in between full changes.

Warmer rooms and more direct light both accelerate how quickly the water fouls, so treat weekly as a starting point and shorten the interval if you notice cloudiness or odor developing sooner.

Do I need special fertilizer for a hydroponic monstera?

Yes, a fertilizer formulated for hydroponic or semi-hydroponic use, dosed at roughly a quarter to half the strength recommended for soil.

Standard soil fertilizers are formulated assuming soil will buffer nutrient concentration over time, which does not happen in water, so using one at full soil strength in a hydroponic setup risks a fast, damaging salt buildup around the roots.

Why did my monstera’s leaves turn yellow and drop after I moved it to water?

A single dropped leaf within the first two to three weeks after conversion is normal transition shock, the plant shedding a soil-adapted leaf while its water roots establish.

Continued yellowing beyond that window, or yellowing spreading to several leaves, usually points to a nutrient or pH imbalance in the water rather than the conversion itself, and is worth checking against a water test before assuming it will resolve on its own.

Is LECA better than pure water culture for a monstera?

Neither is strictly better, but LECA is generally more forgiving for a first attempt, since the reservoir buffers moisture and nutrient changes more gradually than open water does and needs a full flush only every few weeks rather than weekly.

Pure water culture gives you a clearer, more immediate view of root health and suits anyone who wants to closely monitor a plant, particularly during the first month after conversion.

Will my monstera grow bigger in hydroponics than in soil?

It often grows faster once established, since the roots spend less energy searching for nutrients that are already dissolved and available, but faster growth is not the same as larger ultimate size.

A monstera’s mature size depends more on pot or container volume, light, and long-term feeding consistency than on whether the medium is soil or water.

Can I use plain tap water for a hydroponic monstera?

It depends on your local water quality. Heavily chlorinated or very hard tap water can irritate developing water roots and push pH outside the range the plant needs to take up nutrients properly, so filtered, distilled, or rested tap water, left out uncovered for 24 hours to let chlorine dissipate, is the safer default.

If growth stalls despite correct fertilizing, testing your tap water’s pH and hardness is one of the first things worth ruling out.

Key Takeaways

1. Rinse every trace of soil from the roots before converting to water or LECA, since leftover soil decomposes in the reservoir and clouds it within days.
2. Use distilled, filtered, or rested tap water rather than water straight from the tap, and aim for a pH between roughly 5.5 and 6.5.
3. Change pure water culture reservoirs weekly. LECA needs a full flush only every three to four weeks, with plain water topped up in between.
4. Use a fertilizer formulated for hydroponics at a quarter to half soil strength. A full soil-strength dose builds up salts far faster in unbuffered water.
5. Never use a metal container, and keep the stem above the waterline even though the roots stay fully submerged.
6. Expect a few weeks of slower growth and possibly a dropped leaf right after conversion. That is transition shock, not a sign something went wrong.
7. Light and humidity needs do not change with the growing medium. A hydroponic monstera can still sunburn on a bright windowsill.
8. A monstera can live in water or LECA indefinitely as long as water changes and feeding stay consistent.

Final Thoughts

The gap between a thriving hydroponic monstera and a slimy, algae-choked jar rarely comes down to the plant itself.

Monstera adapts to a soil-free root system about as readily as any houseplant does.

The gap comes down to whether you treat water culture as a genuinely different growing system, with its own water chemistry, feeding schedule, and maintenance rhythm, or as an aesthetic swap where you just move the plant from a pot into a jar and expect soil-based habits to carry over. Get the setup right once, and the ongoing care is genuinely lower-effort than soil, not higher.