7 trees you can have inside the house to purify the air » The Horticulturist

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Laurel (Laurus nobilis)

7 trees you can have inside the house to purify the air

The bay leaf has pointed oval leaves which are a common ingredient in cooking. It’s easy enough to keep this plant as an indoor tree to keep its leaves close at hand. Bay laurel has a slow growth rate and is well adapted to pruning, so you will be able to keep the potted plant at a manageable size. Make sure you don’t overwater.

Light: Full sun or intense indirect light Water: Moderate humidity; let the soil dry out between waterings

Guava (Psidium guajava)

7 trees you can have inside the house to purify the air

Guava is a shrub or small tree native to tropical regions. However, it can also be grown indoors if you can mimic its favorite tropical conditions of high heat and humidity. Give your plant plenty of light, warmth and humidity. Moving it outside during the warmer months is a good option to give the tree the sunlight it needs. These plants grow from a single trunk or several stems. They won’t always flower or fruit indoors, but their mottled green bark and large green leaves provide visual interest.

Light: Full sun Water: Damp but not wet

Banana (Musa spp.)

7 trees you can have inside the house to purify the air

Lovers of giant leaves will appreciate its lush foliage. Some bananas, such as Cavendish, produce fruit, while others, such as Musa basjoo (Japanese banana), do not. When buying indoor bananas, look for dwarf cultivars to keep them at a manageable size. Warm temperatures, full sun, and regular fertilization help these fast-growing trees reach their potential. If the leaves begin to turn brown or curl, look for spider mites, which are common banana pests.

Light: Full sun Water: Moist but not wet; don’t let the soil dry out

Kumquat or kumquat (Citrus japonica)

7 trees you can have inside the house to purify the air

Kumquats generally do well in containers and even have the potential to bear fruit indoors. The key to success is giving them as much sun as possible and using supplemental grow light if the windows aren’t providing enough light. Kumquats can’t tolerate soggy soil, so don’t overwater them and use a container with excellent drainage. The trees have dense, glossy, dark green foliage that looks great even if they don’t bear their small orange fruits.

Light: Full sun Water: Keep the soil slightly moist but not wet

Ficus (Ficus benjamina)

7 trees you can have inside the house to purify the air

Ficus are valued for their rich green color and ease of care. A well-lit room goes a long way in preventing leaf drop. The most desirable is a room with a large window or skylight. Plant in well-drained soil and water only when the soil surface is dry.

Light: Bright, indirect light Water: Damp but not wet; allow to dry out between waterings

Aquatic Pachira

7 trees you can have inside the house to purify the air

The slender trunk of the Pachira aquatica, also known as the money tree, lends itself to weaving and many of these trees are sold. The braids will grow with the tree over time, hardening and becoming woody as the plant matures. The money tree prefers high humidity, but don’t leave it in standing water. In the wild, you’ll find it growing in swamps and wetlands. Make sure the container is filled with a potting mix that has excellent drainage.

Light: Bright, indirect light Water: Keep constantly moist

Araucaria heterophylla

7 trees you can have inside the house to purify the air

Araucaria heterophylla, commonly known as araucaria excelsa, araucaria or Norfolk Island pine, is a conifer belonging to the Araucariaceae family.

Small potted Norfolk Island pines are sold as “indoor Christmas trees”. But these long-lived trees look great any time of the year. Slightly acidic soil, bright light, cool temperatures, fertilizing once a month, and moderate watering will keep your tree happy.

Light: Full sun with some afternoon shade to prevent foliage discoloration Water: Moderate humidity

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