These 17 Houseplants Share One Thing – Outdoor Air Kills Them

Plant Care
By Harris Cole

In the world of houseplants, not all greenery thrives outdoors. Many beloved indoor plants are sensitive to the elements outside, making them perfect candidates for indoor life only. This guide explores 17 unique houseplants that share a common trait – they can’t withstand outdoor air, thriving best within the controlled climate of your home.

1. Peace Lily

© PlantingTree

Peace Lilies are known for their graceful white blooms and lush, dark green leaves. With a reputation for purifying indoor air, these plants are a favorite among houseplant enthusiasts. However, once exposed to outdoor air, especially cold drafts, their leaves can quickly become damaged. They thrive in a stable, indoor environment where humidity is moderate and the temperature remains constant. Did you know? The Peace Lily is not a true lily, but rather a member of the Araceae family. Keep them inside, and they’ll reward you with year-round elegance.

2. Boston Fern

© Jackson & Perkins

Boston Ferns are cherished for their feathery, arching fronds that add a touch of elegance to any space. Indoors, they love humid conditions and indirect sunlight. While they make a room feel like a tropical oasis, outdoor air, especially during dry or cold conditions, can lead to browning and shedding of leaves. Fun fact: Boston Ferns played a role in the Victorian era as a popular parlor plant symbolizing purity and humility. Keeping them indoors ensures they remain vibrant and lush.

3. Spider Plant

© Better Homes & Gardens

Spider Plants are a staple in many homes due to their easygoing nature and striking appearance. Their arching leaves and dangling “babies” make them a delightful visual addition. Outdoors, they suffer from temperature fluctuations and direct sunlight, which can bleach the leaves. Interestingly, Spider Plants are known for their air-purifying qualities, making them ideal for indoor spaces. They were one of the first plants to be sent to space to test their air-cleansing abilities! Keep them inside to enjoy their full benefits.

4. Pothos

© House & Garden

Pothos plants, with their trailing vines and heart-shaped leaves, are perfect for adding greenery to shelves and corners. While they can tolerate a range of indoor conditions, outdoor air can be too harsh, leading to crispy leaves and stunted growth. These plants are incredibly adaptable indoors, managing low light and irregular watering. Did you know? In some cultures, Pothos is thought to bring prosperity and good luck to homes. Place them indoors for lush, trailing foliage that livens up any room.

5. Orchid

© Heavenly Orchids

Orchids are the jewels of the plant world with their intricate flowers and elegant stems. Indoors, they require a specific care routine including consistent humidity and filtered light. Outdoor air, especially cold or dry, can lead to wilting flowers and unhappy plants. In Victorian times, orchids were a symbol of luxury and elegance, often found in the homes of the affluent. Keeping them indoors ensures they thrive and continue to produce their stunning blooms. Protect these beauties from the rigors of the outdoors.

6. Fiddle Leaf Fig

© Léon & George

Fiddle Leaf Figs are adored for their large, glossy leaves and dramatic presence. While they can transform the look of any indoor space, outdoor air can be their nemesis, causing leaf drop and browning. These trees prefer stable, indoor conditions with plenty of indirect sunlight. Fun fact: The Fiddle Leaf Fig gained massive popularity in the design world during the 2010s and remains a favorite among interior decorators. Maintain their stunning appearance by keeping them safely indoors.

7. Snake Plant

© Rosy Soil

Snake Plants are the epitome of resilience, known for their striking upright leaves and air-purifying abilities. Indoors, they thrive with minimal care, adapting to low light and infrequent watering. However, outdoor conditions, particularly cold and wet, can lead to rot and decay. Interestingly, these plants were used in NASA’s Clean Air Study as effective air purifiers. Keep them indoors to enjoy their architectural beauty and health benefits. Their hardy nature makes them perfect for forgetful plant owners.

8. ZZ Plant

© Real Simple

ZZ Plants are celebrated for their glossy leaves and low-maintenance nature, making them a top choice for busy individuals. They thrive indoors where consistent temperatures and indirect light allow them to flourish. Outdoor exposure can cause yellowing leaves and stunted growth. An interesting tidbit: ZZ Plants can survive months without water due to their rhizomes that store moisture. This resilience makes them an ideal houseplant that thrives away from the elements. Allow ZZ Plants to decorate your indoor spaces with their enduring charm.

9. Calathea

© The Balcony Garden

Calathea plants are admired for their vividly patterned leaves that fold up at night in a display known as nyctinasty. Indoors, they prefer high humidity and low light, mimicking their native tropical understory habitat. Outdoor air, especially dry or direct sunlight, can damage their delicate leaves. Curiously, Calatheas are sometimes called “prayer plants” due to their leaf movements. Keep them inside where humidity is controlled, and enjoy their ever-changing beauty. Their captivating foliage patterns add artistic flair to any room.

10. Bromeliad

© The Sill

Bromeliads are tropical wonders, known for their vibrant bracts and rosette of leaves that can store water. Indoors, they thrive in humid environments with indirect light. Outdoor air, especially if too dry or cold, can hinder their growth and vibrant display. Did you know? Bromeliads are part of the pineapple family, adding an exotic touch to your indoor garden. They bring a splash of color and a tropical vibe to any interior space. Keep them indoors to enjoy their unique, long-lasting blooms.

11. Monstera

© Real Simple

Monstera plants, often referred to as the “Swiss Cheese Plant,” are famous for their large, fenestrated leaves. While they grow vigorously indoors, outdoor exposure can lead to leaf damage and slowed growth. These plants prefer stable indoor climates with filtered sunlight. In the mid-20th century, Monsteras became icons of the tropical modernism movement. Their striking foliage and bold appearance make them perfect for adding a touch of jungle to your home. Protect them from harsh outdoor elements for continuous growth.

12. Philodendron

© Martha Stewart

Philodendrons are classics in the world of houseplants, known for their heart-shaped leaves and trailing vines. Indoors, they adapt well to various light conditions and care routines. However, outdoor air can result in leaf burn and poor growth. Did you know? Philodendrons have been popular since Victorian times, symbolizing love and abundance. Their versatility makes them suitable for any indoor space, from offices to living rooms. Keep them inside to enjoy their timeless beauty and ease of care.

13. African Violet

© Yates Australia

African Violets are treasured for their delicate blooms and fuzzy leaves, bringing a nostalgic charm to any room. Indoors, they require steady warmth and filtered light. Outdoor conditions, particularly drafts and temperature swings, can damage their sensitive foliage. Interestingly, African Violets were discovered in Tanzania in the 19th century and quickly became popular worldwide. Their charming flowers offer a pop of color without the need for outdoor exposure. Keep them indoors to enjoy their continuous bloom cycle.

14. Dracaena

© Gardens Illustrated

Dracaenas are popular for their striking sword-like leaves that add a modern touch to any interior. Indoors, they adapt to a variety of conditions, making them perfect for new plant owners. Outdoor air, particularly cold drafts, can cause leaf damage and lead to stunted growth. A fascinating fact: Dracaenas are often used in feng shui to enhance the flow of chi. Keep them indoors to maintain their health and striking appearance. Their architectural foliage makes them standout features in home decor.

15. Begonia

© Better Homes & Gardens

Begonias are cherished for their beautiful, often variegated leaves and vibrant blooms. Indoors, they flourish with moderate water and indirect light. Outdoor conditions can cause leaf burn and wilting due to their sensitivity to temperature changes. Did you know? Begonias were named after Michel Bégon, a French governor who promoted botanical exploration in the 17th century. Their diverse leaf patterns and bright flowers bring a touch of sophistication to indoor spaces. Keep them safe from outdoor stressors for ongoing beauty.

16. Jade Plant

© Nick’s Garden Center

Jade Plants are loved for their thick, glossy leaves and tree-like structure. Indoors, they thrive with minimal care and plenty of sunlight. Outdoor air, especially cold or damp conditions, can cause their leaves to drop and roots to rot. Fun fact: Jade Plants are thought to bring good luck and prosperity, often given as housewarming gifts. Their resilience and ease of care make them ideal for beginners. Keep them indoors to enjoy their longevity and symbolic charm.

17. Maidenhair Fern

© Blacklotus Landscaping

Maidenhair Ferns are admired for their delicate, lacy fronds that sway gently with the slightest breeze. Indoors, they require high humidity and consistent moisture to thrive. Outdoor air, particularly if dry or windy, can quickly lead to browning and leaf loss. An interesting tidbit: Maidenhair Ferns were often depicted in ancient Roman art as symbols of love and sincerity. Their soft, cascading foliage adds elegance to any indoor garden. Keep them in controlled environments for optimal beauty.