The Swiss Cheese Plant, or Monstera deliciosa, is a popular houseplant known for its large, split leaves, a feature called fenestration. Because this plant originates from the tropical rainforests of Central America, it requires specific conditions to thrive indoors. Providing the right amount of hydration is the most delicate balance to maintain, ensuring your plant maintains its vibrant, lush appearance.
Checking Soil Moisture
Knowing precisely when to water is far more important than following a fixed schedule, as a Monstera’s water needs fluctuate based on its environment. The most reliable method for determining if your plant is ready for a drink is the tactile “finger test.” Insert your index finger about two to three inches deep into the soil, which is roughly up to your second knuckle.
The plant needs water when the soil feels dry at this depth, indicating that the top half of the potting medium has dried out. Allowing this much of the soil to dry encourages the roots to seek out moisture. If the soil at that depth still feels cool or damp, you should wait another day or two before checking again. Environmental factors like the season, the amount of light the plant receives, and your home’s humidity all affect how quickly the soil dries.
The Act of Watering
Once the soil signals it is time for a drink, the goal is to provide a deep, thorough saturation that mimics a tropical downpour. Slowly pour water over the entire surface of the soil until you see it flowing freely out of the pot’s drainage holes. This deep soaking ensures that the entire root ball is hydrated, flushing out any accumulated mineral salts.
It is important to use room-temperature water to avoid shocking the plant’s root system. If your tap water is heavily chlorinated or high in mineral content, known as hard water, consider using filtered water or allowing tap water to sit out overnight so the chlorine can dissipate.
After the water has finished draining, allow the pot to sit for about 15 to 20 minutes before discarding any excess water collected in the saucer or cachepot. Allowing the plant to sit in this standing water is the primary cause of root rot, as it deprives the roots of necessary oxygen.
Recognizing and Fixing Watering Problems
Improper watering habits manifest through distinct visual cues in the leaves and stems, and learning these signs allows for prompt correction. Overwatering is often the more damaging issue, as it creates an anaerobic environment where oxygen is restricted and root rot can develop. Overwatered plants commonly display yellowing on the older, lower leaves first, and if the problem persists, the stems may turn dark and become mushy.
If you suspect overwatering, stop watering immediately and allow the soil to dry out completely. If the soil remains soggy for more than a week, you may need to unpot the plant to inspect the roots. Healthy roots are firm and white, while rotting roots are brown, soft, and emit a foul smell.
Conversely, underwatered Monsteras will show signs of dehydration by developing brown, crispy edges or tips on the leaves. An underwatered plant may also exhibit a general droopy or wilted appearance. To fix underwatering, provide a thorough, deep soak.