Overwatering vs Underwatering: How to Tell What Your Plant Needs 🌱

Caring for indoor plants can sometimes feel like a guessing game. Are the leaves turning yellow because your plant needs more water, or are you giving it too much?

Both overwatering and underwatering can cause similar symptoms, making it difficult to know what your plant actually needs. Understanding the signs can help you build a better watering routine and keep your plants healthy.

Signs of Overwatering

Overwatering is one of the most common problems for indoor plants. While plants need water to grow, too much moisture around their roots can prevent them from getting the oxygen they need.

Common signs of overwatering include:

• Yellowing leaves
• Soft or wilting leaves
• Soil that stays wet for long periods
• A musty smell from the potting mix
• Root rot

One of the biggest mistakes plant parents make is watering on a strict schedule without checking the soil first. Your plant might need water twice a week during warmer months but only once every week or two during cooler periods.

The key is to check the soil before watering.

Signs of Underwatering

Underwatering happens when your plant isn’t receiving enough moisture to support healthy growth. This can happen when the soil dries out completely or when your plant needs more frequent watering due to warmer weather.

Signs of underwatering can include:

• Drooping or wilting leaves
• Dry, hard or shrinking soil
• Brown, crispy leaf edges
• Leaves falling off
• Slow or stunted growth

If your plant is underwatered, giving it a thorough drink can often help it recover. However, very dry soil can sometimes repel water, so you may need to water slowly and allow the moisture to soak through.

How Can You Tell the Difference?

Overwatering and underwatering can both cause wilting, which makes them easy to confuse.

The best place to start is by checking the soil.

If the soil is dry several centimetres below the surface, your plant may need water. If the soil is still damp, hold off watering and give it more time to dry out.

It’s also important to consider your plant type, pot size, light levels and the season. Plants in bright, warm spaces may use water more quickly, while plants in low-light areas may stay damp for longer.

Rather than watering every plant on the same schedule, try to understand what each plant needs.

How Sustee Helps Prevent Watering Mistakes

Knowing when to water isn't always easy, especially when you have multiple indoor plants.

That’s where Sustee Plant Moisture Indicators can help.

Sustee takes the guesswork out of watering by showing you when your plant needs water:

• Blue: The soil is moist.
• White: It’s time to water.

Simply place Sustee into the potting mix and check the indicator. When it turns white, it’s a reminder to water your plant.

Sustee doesn’t require batteries, electronics or an app, making it a simple way to keep track of your plants’ moisture levels.

It’s particularly useful for busy plant parents, beginners or anyone who has ever wondered, “Did I water that plant already?”

Finding the Right Watering Routine

There isn’t one watering schedule that works for every indoor plant. The best routine depends on your plant’s individual needs and growing environment.

Instead of watering automatically, take a moment to check the soil and observe your plant. Look for changes in the leaves, moisture levels and overall growth.

With a little practice—and the right tools—you can become more confident in knowing when your plants need water.

Healthy plants start with understanding their needs, not simply watering more often. 🌿

Take the Guesswork Out of Watering

Want an easier way to know when your plants need water?

Explore our Sustee Plant Moisture Indicators and make plant care a little simpler.

Shop Sustee Plant Moisture Indicators