Why mould shows up in the first place
Mould spores exist naturally in the air around us. They only become a problem when they land on a surface and find the right conditions to grow.
Mould tends to appear when three things come together:
- Moisture — From steam, leaks, condensation or damp surfaces
- Poor ventilation — Stale, humid air allows moisture to build up
- Warm temperatures — Indoor conditions are often perfect for mould growth
Common areas where mould appears include bathroom ceilings, behind furniture placed against outside walls, wardrobes, window frames and areas affected by leaks.
Keeping humidity levels down is one of the simplest ways to discourage mould — and that’s where a few carefully chosen plants can lend a hand.
Peace lily
Peace lilies are often recommended for improving indoor air quality, but they also enjoy humid environments and naturally absorb moisture through their leaves.
Because they thrive in damp air, they are well suited to bathrooms or laundry areas where steam can build up.
Peace lilies prefer:
- Bright but indirect light
- Consistently moist soil
- A warm indoor environment
As a bonus, their elegant white flowers bring a fresh, calm look to indoor spaces.
Tillandsia (air plants)
Tillandsia, commonly known as air plants, are a little different from traditional houseplants — and that’s part of their appeal. Instead of growing in soil, they absorb moisture and nutrients directly from the air through their leaves.
This natural ability makes them helpful in areas where humidity tends to linger, such as bathrooms, laundries or kitchens with limited airflow.
Because they don’t require pots or soil, air plants are easy to display on shelves, in hanging holders or mounted on decorative stands, making them a flexible option for small spaces.
Tillandsia generally prefer:
- Bright, indirect light
- Good air circulation
- Occasional misting or soaking, depending on the variety
Their sculptural shapes add visual interest while quietly helping to manage excess moisture in the air — all with very little maintenance required.
Boston fern
Boston ferns are natural humidity lovers. Because they thrive in moist environments, they draw water vapour from the surrounding air. Their lush fronds also add a soft, leafy look to rooms.
Boston ferns grow best with:
- Indirect light
- Regular watering
- Higher humidity levels
Bathrooms with natural light are often perfect homes for these plants.
Spider plant
Spider plants are famously easy to care for, which makes them a good choice for beginners.
They absorb moisture from the air and adapt well to most indoor conditions.
Spider plants typically do well with:
- Bright, indirect light
- Light watering
- Average indoor temperatures
Are plants enough to stop mould?
While moisture-loving plants can help reduce humidity slightly, they are not a complete solution on their own. Mould prevention still depends on a few household habits.
Some simple steps that make a big difference include:
- Opening windows regularly to allow fresh air to circulate
- Using exhaust fans in bathrooms and kitchens
- Wiping down condensation on windows
- Fixing leaks promptly
- Avoiding overcrowding furniture against walls
Think of plants as a helpful assistant rather than the main defence.
A small natural helping hand
Houseplants can make a home feel calmer, greener and more welcoming. Choosing varieties that absorb moisture can also provide a small boost in the battle against mould. When combined with good ventilation and regular cleaning, these leafy helpers can play a part in keeping your indoor spaces fresher and more comfortable year-round.
SOURCE: Better Homes & Gardens
