When Shall I Water My Plant ?

Second to light, water is the most important resource you provide for houseplants. Many plant owners err on the side of giving their plants too much water, which leaves them oversaturated and prone to rot.

For this reason, it’s essential to determine how much water each plant variety requires. This lets you meet their needs without exceeding them and causing problems.

So how much should you water? There are lots of variables to pay attention to when deciding. These include:

  • How much light exposure the plant gets (lots of light dries out the soil faster)
  • The room's relative humidity
  • The size of the pot (larger pots hold water longer)
  • The type of potting soil
  • The time of year (plants require less water in colder weather when growth is slower)

And more!

How Much to Water?

Every plant variety will have different water requirements. Research the variety, and you should get clear guidelines for the best frequency.

As a general rule, tropical plants need frequent watering, along with misting on their leaves. In contrast, cacti and other plants from arid regions can have their soil dry out entirely between watering sessions.

It’s usually a good idea to let the soil dry out between watering sessions. Use your finger to test the moisture level an inch or two into the soil. If it comes out dry, it’s likely time to water again.

Note: If your planting soil stays waterlogged for days after watering, the problem might be the pot. Consider switching to one with better drainage.

Can I Water with Tap Water?

There’s no easy answer to that question. In most cases, tap water is fine. However, sometimes it is softened with salts, which can build up in the soil and cause problems. And, while chlorine isn’t necessarily a concern, it’s usually better to avoid it.

If possible, try to water houseplants with filtered water or rainwater. Consider collecting some in a rain barrel to have on hand.

No matter the water source, you need to pay attention to its temperature. Use room-temperature water as much as possible so the plant isn’t shocked at exposure.

How to Tell if You're Overwatering Your Houseplants

Many a houseplant has met an early end because of overwatering. Plant roots need oxygen, and too much water will suffocate them. It’s important to know the signs early on to adjust your habits and help your plant recover.

Common symptoms of overwatering include:

  • The soil doesn't dry out between watering sessions
  • The soil smells perpetually damp and rotten
  • The base of the plant is mushy to the touch
  • Leaves are wilting, yellowing, and falling off
  • There are signs of mold in the pot or on the soil
  • Small water-loving insects like fungus gnats are in the pot

If you think you’re overwatering, consider cutting back to half your current water sessions. You may need to repot the plant and switch out the potting soil if it seems to be in distress.

Knowing how much to water your plants takes practice and research. Learn as much as you can about your variety before beginning, and you’ll soon learn how to give it what it needs to thrive.