Human Assets:  Generally speaking, the cost of human assets to a company is significant. The cost of the personnel assets is estimated at 10 X Total Building Operating Costs,  and 10 X Total Energy Costs of a workplace setting.
Research shows that the following improves with interior plantscapes:
Employee Reaction Times – Improved 12% in tests with measured stress responses

In stressful situations:

Visual Access to Plant Settings produces significant recovery from stress within five minutes.
(Research: Dr. Richard Ulrich, Texas A&M University)

Employee Satisfaction – Employees frequently have a “Green Thumb Passion”

Studies have shown that the indoor work environment is important at many different levels, especially in worker productivity. (ASID-The Impact of Interior Design on the Bottom Line. )

In fact, the American Society of Training & Development says “Companies are focusing on the physical workplace as a key component of their corporate strategy to improve productivity. (” ASID-The Impact of Interior Design on the Bottom Line.)
Research has found that: “Office workers are more likely, and willing to log an extra hour per day given the right workplace designs.”  (The Gensler 2006 U.S. Workplace Survey )

“The effect of office design on companies’ bottom line for worker productivity in the U.S. is estimated to be at least $330 billion annually.” (The Gensler 2006 U.S. Workplace Survey

Efficiency:  Under controlled conditions, people working in a windowless college computer lab reacted 12% faster to computer tasks, were less stressed (lower blood pressure) and felt more attentive than those working in a room with no plants.  (Source: Lohr, V.I., C.H. Pearson-Mims, and G.K. Goodwin. Journal of Environmental Horticulture 14(2):97-100

Improved Thinking Capacity:  In an 8 month study, men and women exhibited more innovative thinking in workplace settings that included plants and flowers.

Men generated 15% more ideas when plants were present.

Women generated better ideas! (more creative, flexible solutions to problems.)
(Source: Roger Ulrich, Texas A&M University.  Photo: BMW offices in Germany.)

Workers who spend at least 4 hours per day on a computer showed a significant improvement in efficiency and concentration when plants were present. (Source: Berg, J. A.; Constructing for people – perception of the quality of the working environment )

Reaction Time:  Research also shows that we have 12% quicker reaction rate on computer tests, when plants are present in the room. We are more productive!  (Source: Lohr, V.I., C.H. Pearson-Mims, and G.K. Goodwin. Journal of Environmental Horticulture 14(2):97-100


Indoor plants can Improve Our Health!

Indoor plants can help reduce absenteeism.  A workplace well-being study shows in offices without plants workers were absent 3.6 days because of poor air quality complaints.
(Source: John Bergs, The Effect of Healthy Workplaces on the Well-being and Productivity of Office Workers )

Common Office Chemical Emissions:
Formaldehyde, xylene, benzene, chloroform, ammonia, acetone and others (Emissions come from ceiling tiles, copy machines, particleboard, carpeting materials, computers… and more of our common components of an office setting.

Employee complaint
Sore Throat
Dry Skin
% Sympotom Reduction

In a two year study in 51 offices, health symptoms were 23% less in offices with plants.  (Source: Fjeld, T., et al. “Effect of Indoor Foliage Plants on Health and Discomfort Symptoms Among Office Workers,” )

The #1 office toxin, formaldehyde, was rapidly eliminated by commonly used office plants. (Source: Wood, R. A., et al. “Study of Absorption of VOCs by Commonly Used Indoor Plants” )


Common Name

Botanical Name

Removal Rate

Boston Fern

Nephrolepsis exaltata


Dwarf date palm

Phoenix roebellini


Bamboo palm

Chamadorea seifrizii


Janet Craig

Dracaena deremensis


English ivy

Hendera Helix


Weeping fig

Ficus benjamina


Peace lily

Spathiphyllum “Clevelandii”


Areca palm

Chrysalidocarpus lutescens


Corn plant

Dracaena fragrens “Massangeana”


Lady palm

Rhapis excelsa


Plants Cost Less than Most Corporate Décor Items –
Yet the Workplace is Perceived as More Expensive-Looking with Effective Interiorscaping.


The following research facilities, and many more,
have done significant research on the effective use
of plants in office environments:

NASA – John Stennis Space Center
Oxford University
University of Surrey
Unifi Network, Westport, CT
California – OSHA
Texas A&M Univ.
Washington State University
University of Tennessee
US Dept of Agriculture
Int’l Society of Arbiculture
“Plants at Work”

Interior Fountain and Garden