Although watering seems like the simplest part of plant care, it’s also one of the most misunderstood. Factors such as soil composition, humidity, and light exposure all influence how often a plant needs water. In this post, we’ll walk you through the basics to help you master proper watering and keep your plants thriving.
How often should I water my plants?
Watering houseplants isn’t one-size-fits-all. It depends on many factors, including plant type, soil, light, temperature, humidity, and season. Consider where the plant originates: cacti and succulents thrive in desert conditions and prefer to dry out completely between waterings, while tropical plants in the shaded forest love consistently moist soil.
Here’s a clear way to approach it:
- Check the soil regularly – Stick your finger a few centimeters into the soil. If it feels dry, it’s time to water. If it’s still moist, wait a few days.
2. Observe your plant – Wilting, drooping, or yellowing leaves can indicate over- or under-watering. Some plants “tell” you visually when they need water, including Scindapsus argyraeus, Epipremnum golden pothos, Aglaonema, and Spathiphyllum. Their leaves will drop or curl and wont hold their shape.
3. Adjust for the season – Most plants grow faster in spring and summer and need more water, while growth slows in fall and winter. For example, a plant that needs watering once a week in summer may only need it every 10 days in winter.
4. Consider soil type and pot size – Soils with more perlite or sand dry out faster, while peat-rich soils retain moisture longer. Check out our desert soil mix and universal soil mix for comparison. Pot size matters too: bigger pots hold more water, but houseplants often prefer smaller pots that dry out more quickly.
Tip for beginners: Check soil regularly and keep a mental or physical journal of how your plants respond to different moisture levels. Remember, it’s usually better to underwater than overwater. Most houseplants thrive when watered every 5–14 days, depending on conditions.
Ways to Check Soil Moisture
We rely on these simple methods:
- Soil moisture meters – If other methods feel unreliable, soil moisture meters are a convenient alternative. Many accurate options are available on the market.
- 2. Finger test – For most houseplants, water when the top layer of soil is dry. Press your finger into the soil to feel moisture. Dry soil? Time to water. Moist soil? Wait a few days. Hard-to-penetrate soil? Consider using a better soil mix for aeration and root health.
- 3. Weight test – Lifting the plant can give you a feel for soil moisture. Lighter pots usually indicate dry soil. (Skip this with large, heavy plants.)
- 4. Leaf cues – Leaves often show signs of water needs: curling, drooping, yellowing, or succulence changes. A day or two after watering, the plant should regain structure.
How Much Water Should I Use?
Water quantity depends on pot size, soil type, and plant type. Methods differ too:
- Cacti or succulents in well-draining soil – Bottom watering works best. Place the plant in a container of water and let it absorb moisture for about 30 minutes, then remove excess water.
- Tropical plants in somewhat dry soil – You can bottom-water, shower, or top-water until water drains from the pot. If the soil retains some moisture, it will absorb water evenly.
- Large plants that can’t be moved – Top-water slowly, letting the soil absorb water gradually. Repeat until moisture is evenly distributed. When in doubt, underwater rather than overwater. You can always add water, but it’s harder to fix overwatering.
5 best tips for watering houseplants
- Water when the soil is about halfway dry, especially for tropical plants in well-draining soil.
- For large collections, consider showering your plants – it mimics natural tropical rainfall and keeps them clean.
- Morning is the best time to water – Water droplets evaporate during the day, preventing fungal and bacterial growth.
- Avoid standing water – Never let a plant sit in water for more than 30 minutes; always ensure drainage holes are free.
- Underwater rather than overwater – It’s easier to add water than to remove it or recover from root rot.