Can You Grow Pothos In LECA?

Yes. Next question.

Fine, there’s a bit more to it than that — but not much.

If you’ve been down the semi-hydro YouTube rabbit hole and come out the other side convinced you need to pH test your water, flush your LECA on a schedule, and feed on a precise weekly rotation, I have good news: you don’t.

I’ve done all of that. I’ve also done none of it. The plant didn’t care either way.

What Is LECA, Briefly

LECA stands for lightweight expanded clay aggregate. It’s those small brown clay balls you’ll see in bags at garden centres, usually marketed at hydroponic growers. In the houseplant world, it’s used as a soil-free substrate — the plant sits in the clay balls, which wick moisture up from a reservoir of water below.

This is what’s called semi-hydroponics. The roots get water and nutrients from the reservoir rather than from soil.

A Quick Confession Before We Go Any Further

My plant that lives in LECA isn’t *technically* a Pothos.

It’s an Epipremnum amplissimum — longer, thinner leaves than a standard golden Pothos, but the same genus and very similar in terms of care.

The thing we call “pothos” is also Epipremnum (specifically Epipremnum aureum).

There is an actual Pothos, but they’re not kept as houseplants.

I don’t understand why we called a pothos a pothos when it isn’t a pothos, but I do understand that typing Epipremnum all the time is tedious, so Pothos it is.

How To Set Up Pothos In LECA

This is where a lot of guides go off the rails. Here’s what you actually need to do:

Wash as much of the old soil off the roots as possible — take your time with this, you want the roots reasonably clean before they go into the new substrate (if you have aquarium, you can root it on pretty quickly here, then move to LECA when roots have formed. Then put the plant into a nursery pot filled with LECA, and sit that nursery pot inside a decorative outer pot. Add water to the outer pot until it reaches just below where the roots start.

That’s it. Keep the water at that level. Top it up when it drops.

If you want to make it even easier to monitor, use a clear outer pot or vase and mark the water line with a marker. You’ll be able to see at a glance whether it needs topping up.

How to fertilise Pothos in LECA

You do need a hydroponic fertiliser rather than a standard soil feed — soil fertilisers aren’t formulated to be absorbed without soil acting as a buffer. I use General Hydroponics. I use it sporadically. My plant doesn’t care.

If fertilising feels like one more thing to worry about, look for a LECA or semi-hydro mix that has nutrients already added — PON is the main one. It takes fertilising largely off the table, at least initially.

Do You Need To Flush, pH Test, Or Follow A Schedule?

The YouTube rabbit hole would have you believe yes. My experience says: not really.

I’ve flushed, I’ve pH tested, I’ve fed on a schedule. I’ve also let the reservoir run completely dry to the point of drooping and done nothing for weeks at a stretch. She recovered quickly and bore no grudges.

The actual answer is that if your water is drinkable, your fertiliser is diluted to the right strength, and the roots aren’t fully submerged, your Pothos in LECA is probably going to be fine. The precision stuff is there if you want it. It’s not compulsory.

I haven’t cracked out my pH testing kit in years.

The One Thing Worth Watching

Root rot is less of an issue in LECA than in soil — partly because the system is designed around water management, and partly because the clay balls provide far more airflow around the roots than dense potting mix does.

That said, you don’t want all the roots sitting submerged in water permanently. The idea is that the LECA wicks moisture up to the roots — the roots themselves should have air space above the waterline. Keep the reservoir level below the roots and you’ll rarely have a problem.

Is LECA Better Than Soil For Pothos?

Not inherently. It’s a different system with different trade-offs.

LECA is useful if you struggle to work out watering in soil — the reservoir method is more visual and more forgiving than trying to judge when a pot of compost needs water. It’s also cleaner, and dramatically reduces the chances of fungus gnats (no soil, no gnats).

On the other hand, you need to get the fertiliser situation sorted, it’s a faff to transition an established plant, and if you just want to stick a Pothos in a pot and water it occasionally, soil works perfectly well.

Neither is better. One might suit you better.

FAQ