The contracts that most offices have with professional "gardeners" cost significantly more money than you may expect. If only hoop's office management would have realized that some people may be willing to take on some of the maintenance.
EDIT: Here's a presentation through the Green Building Council of Australia that highlights the benefits of indoor environments on productivity. Note however, it is sponsored by a company that offers the previously mentioned contracts.
EDIT: Here's a presentation through the Green Building Council of Australia that highlights the benefits of indoor environments on productivity. Note however, it is sponsored by a company that offers the previously mentioned contracts.
(PDF) http://www.gbca.org.au/uploads/70/2886/Meet%20the%20Stars-%2...
Here is a study published in the American Society for Horticultural Sciences' HortScience journal: http://hortsci.ashspublications.org/cgi/content/full/43/1/18...