Why I Recommend Bottom Watering Houseplants

If there’s one plant-care habit I recommend more often than almost anything else, it’s bottom watering.

I don’t bottom water every single plant every single time, and I don’t think you have to bottom water to keep houseplants alive. But for a lot of my plants—especially the ones growing in chunky, fast-draining soil—it has become my preferred way to water.

Instead of pouring water over the top of the soil, bottom watering allows the potting mix to absorb moisture through the drainage holes in the bottom of the pot.

It’s simple, but there are a few reasons I like it so much.

What Is Bottom Watering?

Bottom watering is exactly what it sounds like: instead of pouring water onto the top of the soil, you place the plant’s pot in a container of water and allow the soil to soak it up from below.

As long as your pot has drainage holes, water can move upward through the potting mix through capillary action.

I usually place the nursery pot or planter into a bowl, tray, sink, or other container with water and leave it there until the soil has absorbed enough moisture.

Then I remove the plant and let any excess water drain before putting it back in its usual spot.

Why I Prefer Bottom Watering

1. It Helps Thoroughly Hydrate the Soil

One of the biggest reasons I bottom water is because it helps make sure the entire root ball actually gets watered.

Potting soil can sometimes become hydrophobic when it gets very dry. Instead of absorbing water, the soil repels it.

You might pour water into the top of the pot, watch it immediately run out of the drainage holes, and assume the plant has been thoroughly watered.

Meanwhile, large sections of soil inside the pot may still be completely dry.

Bottom watering gives the potting mix time to slowly absorb moisture rather than having water rush through the easiest path to the bottom.

This is particularly useful for plants that I intentionally allow to dry quite a bit between waterings.

2. It Encourages More Even Moisture

When you water from the top, it’s surprisingly easy to water one section of the pot more thoroughly than another.

Water can also create channels through the soil. Once those channels form, future waterings may continue traveling through the same areas while leaving other parts of the root ball relatively dry.

Bottom watering allows moisture to spread upward and throughout the potting mix.

That doesn’t automatically mean every inch of soil will have exactly the same moisture level, but I find it much easier to get a thorough watering this way.

3. It’s Great for Chunky Potting Mixes

I use chunky, well-draining soil mixes for many of my houseplants, particularly aroids such as Monstera, Philodendron and Alocasia.

These mixes might contain ingredients such as orchid bark, perlite, coco chips or other coarse materials.

That extra drainage and airflow is great for roots, but it also means water can move through the pot incredibly quickly.

Sometimes too quickly.

Bottom watering gives the finer components of the potting mix more time to absorb moisture before all of the water disappears through the drainage holes.

4. It Keeps the Foliage Dry

Some plants really don’t appreciate having water constantly sitting on their leaves.

Bottom watering makes it easy to hydrate the plant without getting the foliage wet.

This can be particularly useful for plants with textured, fuzzy or tightly clustered foliage where water can become trapped.

Of course, getting a leaf wet doesn’t automatically hurt a plant. Plants get rained on in nature.

The bigger issue indoors is that airflow and evaporation can be much slower, so leaves may stay wet longer than they would outside.

5. It Makes It Harder to Accidentally Miss Part of the Root Ball

This is probably one of the biggest practical reasons I continue doing it.

When I’m caring for a lot of plants, I don’t want to wonder whether I actually saturated the entire pot.

With bottom watering, I can put the plant in water, give it time to drink, check the soil and then let it drain.

There’s much less guesswork involved.

How I Bottom Water My Houseplants

You don’t need any special equipment.

Fill a bowl, container, sink or bathtub with enough water that the bottom portion of the plant’s pot is sitting in the water.

Then:

1. Place the plant in the water.
2. Let it soak for roughly 15–30 minutes.
3. Check the soil.
4. If the soil still feels extremely dry, give it additional time.
5. Remove the plant and allow excess water to drain completely.
6. Return it to its decorative pot or normal location.

Larger pots and extremely dry soil may need longer.

Rather than following an exact timer, I pay attention to the soil. Once the potting mix has absorbed enough moisture, there’s no reason to leave the plant sitting in water indefinitely.

Does Bottom Watering Cause Root Rot?

This is one of the biggest misconceptions about bottom watering.

Watering from the bottom does not inherently cause root rot.

Root problems are much more closely related to the conditions surrounding the roots—particularly soil that remains excessively wet and poorly aerated for too long.

You can overwater a plant from the top.

You can also overwater a plant from the bottom.

The important part is allowing the plant to dry appropriately between waterings and using a potting mix and container that provide enough drainage and airflow for that particular plant.

Once my plant has finished soaking, I let the excess water drain. I don’t leave the pot permanently sitting in a container full of water.

But I Don’t Bottom Water Every Plant

Bottom watering is a tool, not a rule.

There are times when I still water from the top.

Top watering helps flush accumulated fertilizer salts and minerals through the potting mix, so periodically watering thoroughly from above can be beneficial.

For that reason, I don’t recommend exclusively bottom watering forever while never flushing the soil.

Some plants and potting mixes also absorb water perfectly well from the top. If your current watering method is working, you don’t need to change it simply because another method exists.

The Most Important Part: Check the Soil First

Bottom watering doesn’t change the most important rule I follow when watering houseplants:

I water based on the soil, not the calendar.

I don’t automatically water a plant because it’s Tuesday or because it has been exactly seven days since its last watering.

Different plants dry at different speeds, and even the same plant can use water at dramatically different rates depending on the season, temperature, humidity, light, pot size and root system.

Before bottom watering, I still check how dry the potting mix is and decide whether that particular plant actually needs water.

Is Bottom Watering Better Than Top Watering?

Not necessarily.

Both methods work.

But if you’ve ever watered a plant only to discover that the center of the root ball was still bone dry—or watched water immediately pour through a dry pot without seeming to absorb anything—bottom watering is absolutely worth trying.

For me, it’s especially useful for chunky soil mixes, very dry potting soil and plants that I want to water deeply and evenly.

It’s not a secret trick that suddenly makes houseplant care effortless.

It’s simply a watering method that gives the soil more time to absorb the water you’re already trying to give it.

And when you’re caring for a lot of houseplants, anything that makes watering a little more consistent is worth having in your plant-care routine.