The Top 10 Plants for Removing Indoor Toxins

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Common indoor plants may provide a valuable weapon in the fight against rising levels of indoor air pollution. NASA scientists are finding them to be surprisingly useful in absorbing potentially harmful gases and cleaning the air inside homes, indoor public spaces and office buildings.

The indoor pollutants that affect health are formaldehyde, Volatile Organic Compounds (benzene and trichloroethylene or TCE), airborne biological pollutants, carbon monoxide and nitrogen oxides, pesticides and disinfectants (phenols), and radon. These pollutants contribute to ‘sick building syndrome’, which causes symptoms ranging from allergies, headaches and fatigue through to nervous-system disorders, cancer and death.

Through studies conducted by NASA, scientists have identified 50 houseplants that remove many of the pollutants and gases mentioned above. Dr. B. C. Wolverton rated these plants for removing chemical vapors, ease of growth, resistance to insect problems, and transpiration (the amount of water they expire into the air). NASA, with assistance from the Associated Landscape Contractors of America, conducted a two-year study directed by Dr. B.C. Wolverton, an environmental engineer from Picayune, Mr. Wolverton has worked as a research scientist for NASA for some 20 years. His study, in the late ’80s and early ’90s, of the interaction of plants and air found that houseplants, when placed in sealed chambers in the presence of specific chemicals, removed those chemicals from the chambers.

Dr. B.C. Wolverton, researcher and author of “How to Grow Fresh Air – 50 Houseplants that Purify Your Home or Office”, conducted plant studies for NASA that determined that plants can clean pollutants in homes, offices, factories and retail outlets. Later, Wolverton expanded the study and assigned plants a rating from one to 10, based on a plant’s ability to remove chemical vapors or indoor air toxins, ease of growth and maintenance, resistance to insect infestation and the rate at which water evaporates from the leaves.

Top ten plants for removing formaldehyde, benzene, and carbon monoxide from the air

1. Areca Palm (Chrysalidocarpus lutescens)

Also called the “Butterfly Palm”. An upright houseplant that is somewhat vase shaped. Specimen plants can reach 10 to 12 foot in height. Prefers a humid area to avoid tip damage. Requires pruning. When selecting an Areca palm look for plants with larger caliber trunks at the base of the plant. Plants that have pencil thin stems tend to topple over and are quite difficult to maintain.

2. Lady Palm (Rhapis excels)

Also called the “Lady Palm”, this durable palm species adapts well to most interiors. The Rhapis are some of the easiest palms to grow, but each species has its own particular environment and culture requirements. The “Lady Palm” grows slowly, but can grow to more than 14′ in height with broad clumps often having a diameter as wide as their height.

3. Bamboo palm (Chamaedorea seifrizii)

Also called the “reed palm”, this palm prefers bright indirect light. New plants will lose of some interior foliage as they acclimate to indoor settings. This plant likes to stay uniformly moist, but does not like to be over-watered or to sit in standing water. Indoor palms may attract spider mites which can be controlled by spraying with a soapy solution.

4. Rubber Plant (Ficus robusta)

Grows very well indoors, preferring semi-sun lighting. Avoid direct sunlight, especially in summer. Young plants may need to be supported by a stake. The Ficus grows to 8’ with a spread of 5’. Wear gloves when pruning, as the milky sap may irritate the skin. Water thoroughly when in active growth, then allow the soil to become fairly dry before watering again. In winter keep slightly moist.

5. Dracaena “Janet Craig” (Dracaena deremensis)

The Dracaena grows to 10’ with a spread of 3’. Easy to grow, these plants do best in bright indirect sunlight coming from the east/west. They can adapt to lower light levels if the watering is reduced. Keep the soil evenly moist and mist frequently with warm water. Remove any dead leaves. Leaf tips will go brown if the plant is under watered but this browning may be trimmed.

6. Philodendron (Philodendron sp.)

One of the most durable of all house plants. Philodendrons prefer medium intensity light but will tolerate low light. Direct sun will burn the leaves and stunt plant growth. This plant is available in climbing and non-climbing varieties. When grown indoors, they need to be misted regularly and the leaves kept free of dust. Soil should be evenly moist, but allowed to dry between watering.

7. Dwarf Date Palm (Phoenix roebelenii)

A hardy, drought-tolerant and long-lived plant, the Dwarf Date Palm needs a bright spot which is free of drafts. It grows slowly, reaching heights of 8-10’. The Dwarf Date Palm should not be placed near children’s play areas because it has sharp needle-like spines arranged near the base of the leaf stem. These can easily penetrate skin and even protective clothing.

8. Ficus Alii (Ficus macleilandii “Alii”)

The Ficus Alii grows easily indoors, and resists insects. It prefers a humid environment and low to medium light when grown indoors. The Ficus Aliii should not be placed near heating or air conditioning vents, or near drafts because this could cause leaf loss. Soil should be kept moist but allowed to dry between watering.

9. Boston Fern (Nephrolepis exaltata “Bostoniensis”)

The Boston fern grows to 4’ in height with a spread up to 5’. It has feathery ferns which are best displayed as a hanging plant. It prefers bright indirect sunlight. Keep the soil barely moist and mist frequently with warm water. This plant is prone to spider mites and whitefly which can be controlled using a soapy water spray. Inspect new plants for bugs before bringing them home.

10. Peace Lily (Spathiphyllum sp. “Mauna Loa”)

The Peace Lily is a compact plant which grows to a height of 3’ with a 2’ spread. This hardy plant tolerates neglect. It prefers indirect sunlight and high humidity, but needs to be placed out of drafts. For best results, the Peace Lily should be thoroughly watered, then allowed to go moderately dry between waterings. The leaves should be misted frequently with warm water.



Stem Cells From One's Own Body Show Efficacy in Treating Pain

Stem cell therapy is still a relatively new concept that few understand, but it continues to garner a lot of support and promise — especially for medical problems that have traditionally been very difficult to treat. In his fascinating discussion with Open Minds host Regina Meredith, naturopathic doctor Harry Adelson N.D. reveals a new way to address pain by using stem cells as curative agents. This may come as a welcome idea for at least a fifth of the population, who suffer from chronic pain that affects quality of life, the ability to work, sleep patterns, and more.

According to the Mayo Clinic stem cells create other cells with specialized functions, and “[u]nder the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells. These daughter cells either become new stem cells (self-renewal) or become specialized cells (differentiation) with a more specific function, such as blood cells, brain cells, heart muscle cells or bone cells. No other cell in the body has the natural ability to generate new cell types.”

Adelson, says treatment with stem cells can help treat musculoskeletal pain and increase energy using cells from one’s own bone marrow and fat to prompt regeneration. Citing his own use of stem cells on his road to recovery from injury and pain, Adelson says how regenerative therapy using biological tissues found in the human body can restore normalcy to someone living with pain and suffering. 

One of the more exciting aspects of stem cell therapy is that each of us can create our own cells to heal ourselves. Emerging evidence suggests that adult stem cells can not only replicate, but also create various other types of cells. For example, bone marrow stem cells may be able to create bone or heart muscle cells.

Adelson is highly experienced when it comes to using stem cells for pain treatment, having performed numerous procedures using bone marrow combined with adipose (bodily fat) stem cells. He’s also injected more than a thousand intervertebral discs with stem cells. 

Adelson’s excitement for stem cell therapy began with an accident as a young man, while rock climbing in the early 1990s. He was in naturopathic school at the time, when an injury to his shoulder set him off in a new direction, leading him to pursue an alternative to traditional surgery and injections for pain treatment. After receiving his naturopathic degree, Adelson discovered the potential of stem cell therapy.

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