What is the most common cause of death for houseplants?

The most common cause of death for houseplants is over-watering. This phenomenon occurs because when plants receive too much water, the soil becomes saturated, and the roots may not receive the necessary oxygen they need to thrive. As a result, roots can begin to rot, leading to a decline in the plant's health and eventual death.

Houseplants have specific water needs, and while it is essential to keep them hydrated, the balance must be struck. Many plants do well with just a little moisture, and excess watering can quickly lead to problems such as root rot, fungal diseases, and poor nutrient uptake. Understanding the individual watering requirements of each plant species is crucial for their longevity and success in caring for them.

In contrast, factors like under-watering, over-fertilization, and low light exposure can impact plant health but generally do not lead to as rapid a decline as over-watering can. Each of these conditions can stress a plant, but they typically allow for a longer period before causing irreversible damage, making over-watering the more immediate threat.