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Asthma Friendly Gardens

Thomas Leo Ogren
Asthma Friendly Gardens
Tom Ogren
Recent studies have shown that babies born to mothers who were exposed to
high levels of pollen in their last trimester of pregnancy have a much
greater chance of developing asthma. One of the main keys with asthma
prevention is avoidance.
When you have asthma the typical garden is not a very friendly place at
all. There are mold spores to contend with and worst of all is the
pollen. Typical gardens have pollen producing male trees and male shrubs
and other plants that can provoke asthma attacks. Almost anyone with
asthma will tell you that their asthma can be triggered by a good number
of things, but pollen is often number one for causing an attack. Garden
allergies are common, but they need not be. Allergies from gardening
could be largely a thing of the past… if we’re willing to make some
simple changes.
In fall of 1999 in Richmond, Virginia the American Lung Association of
Virginia (ALAV) built a new Breathe EasyÔ office and headquarters. They
had this entire large building constructed with the latest innovations in
green construction and sustainable design. No construction materials were
used that would off gas any harmful or toxic chemicals, no materials were
used that would trigger asthma or allergies. Every attempt was made to
build something that would be pleasant and healthy to work in. The people
who work in this office now will tell you too, that they all notice what
a great improvement it is. Their office is a healthy building.
The ALA decided it would make perfect sense to landscape their new
healthy building (in some states these are now called Health Houses) with
an allergy free landscape. OPALSÔ (the plant/allergy 1-10 numerical
ranking system) was used to select only those plant materials that were
either very low pollen, low allergy, or that were totally pollen free,
allergy free. In effect they created the first true asthma friendly
garden in the US.
Health Houses in other states are now also adding pollen free landscapes
to their green construction, green buildings. A new Health House is about
to be built in Pennsylvania, and the PA Association of Landscapers and
Nurserymen are helping to surround it with an asthma friendly landscape.
Schools too are getting into the clean air act, and in the city of
Visalia, California, the Tulare County Asthma Coalition recently directed
the asthma friendly landscaping of a newly built elementary school.
Twelve keys to building your own asthma friendly garden:
1.Plant lots of female trees and female shrubs. Not only will these not
shed any pollen, they will also trap a good deal of pollen that may stay
in from somewhere else. Think of these female plants as nature’s air
cleaners.
2.Use only low pollen or no pollen lawns. There are types of lawns now
that are pretty well pollen free and these are a big improvement over
some of the older lawn varieties. In southern states, if you have a
common Bermuda grass lawn, consider replacing it with a newer, more
asthma friendly hybrid Bermuda grass. ‘Princess 77’ is a new Bermuda
grass hybrid that can be planted from seed. It is next to pollen free,
grows very low and tight, and is especially good looking.
3.With OPALSÔ 1 is best, 10 is worst. Use only plants with rankings of
1-5. The more plants in your gardens that have rankings ranging from 1-3,
the friendlier your place will be for anyone with allergies or asthma.
4.Remove any trees or shrubs with rankings over OPALSÔ #7. The woody
landscape plants with rankings of 8-10 are all sure-fire allergy
triggering plants and you can live without them.
5.Replace any removed high pollen, asthma triggering plants with their
opposite, female trees or female shrubs. Also good as replacements are
perfect flowered plants that are known to be very low pollen producers.
These will all have good (low) OPALSÔ rankings.
6.Use only plants that are well adapted to your own area. If you can find
natives that have low allergy rankings, consider using them. Look around
your own neighborhood, and see for yourself, which kinds of plants seem
to be flourishing there already. For almost every kind of plant used in
landscaping, there is now a no or low pollen version of it, if you know
what to look for.
7.Use a wide variety of plant materials; diversity is good. Biodiversity
always makes sense. The more diverse our gardens are the fewer problems
we’ll have with insects and molds.
8.Avoid plants with strong fragrances or odors, as they can cause asthma.
Don’t plant jasmines or similar vines next to entrances or exits and
certainly don’t use them underneath bedroom windows.
9.For mulch, use rock or gravel instead of bark to cut down on toxic mold
spores in the garden. Flat stones or pavers also make good, mold free
mulching materials.
10.To further eliminate mold spores, encourage wild birds in your garden.
Virtually all wild birds eat insects, and insect damage triggers
outbreaks of mold. Even the tiny hummingbirds actually eat a large number
of insects. Put up a hummingbird feeder!
11.Keep your plants healthy. This too will cut down on both pollen and
mold. When it is hot and windy, do some irrigating. Fertilize everything
in the garden spring and fall. If plants are crowding each other too
much, thin them out. If tree branches overhead are putting your whole
yard in deep shade, consider having the tree thinned to let in more
light. Fresh air and light are the enemies of molds.
12.If a tree, shrub, vine or any other plant always looks sickly, looks
dirty, or always attracts bugs, then shovel prune it. Dig it up and get
rid of it. Replace it with something easier to grow. Don’t get caught up
in having to spray insecticides all the time, as they too can easily
cause asthma and allergies.
Make your garden a fun, stress free zone. Be sure to have a few
comfortable garden chairs to sit in, and a little table of some sort is
always good too. Wind chimes, bird feeders, and birdbaths can add greatly
to your enjoyment and cost little. A beautiful, pollen free, allergy
free, asthma friendly garden can be just the place for healthy children,
and a great place for anyone to relax and enjoy the great outdoors. For
more advice on low allergen gardening, look up allergy free gardening on
the Internet, or go to your local library and read some books on this new
important subject.
Tom Ogren is the author of five published books, including: Allergy-free
Gardening, Safe Sex in the Garden (Ten Speed Press), and What the Experts
May NOT Tell You About: Growing the Perfect Lawn (AOL Time Warner Books).
Tom has an MS degree in Agriculture-Horticulture, taught landscape
gardening for twenty years, owned and operated two wholesale-retail
nurseries, and in northern Minnesota was host of the popular Public Radio
call-in gardening show, “Tom Ogren’s Wild World of Plants!”
Tom (Thomas Leo Ogren) has published hundreds of articles on health and
gardening. His work has appeared in diverse publications such as South
Africa’s Veldt and Field, in Women’s Day, Alternative Medicine, the
Burpee Seed Catalog, Sunset Magazine, Landscape Architecture, Der
Spiegel, The London Times, The Seattle Times, The Washington Post, and
even the Jerusalem Post. He has also made numerous appearances on HGTV
and his work was the focus of two made for TV documentaries, one by the
Canadian Discovery Channel.
Tom has been interviewed on National Public Radio’s Weekend Edition and
his groundbreaking research was featured on The CBS Evening News. He is a
frequent lecturer for garden clubs, arboretums, civic groups, hospitals,
medical groups, Master Gardeners, and professional associations of
landscapers, landscape designers, writers, nursery people, arborists, and
urban foresters. He has become well known for his fun, high energy,
highly informative, unusual and provocative talks. Tom is a member of the
Professional Landscape Designers Association, and the GWA, the Garden
Writers of America. Unlike many well-published authors, he still tries to
answer all of his own email. You can contact Tom through his website, at:
www.allergyfree-gardening
Notice of Copyright: Copyright Thomas Leo OgrenÓ
About the Author
Thomas Ogren is the author of Allergy-Free Gardening, Ten Speed Press.
Tom does consulting work on for the USDA, county asthma coalitions, and
the American Lung Associations. He has appeared on CBS, HGTV and The
Discovery Channel. His book, Safe Sex in the Garden, was published 2003.
In 2004 Time Warner Books published his latest: What the Experts May NOT
Tell You About: Growing the Perfect Lawn. His website:
www.allergyfree-gardening
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Asthma Friendly Gardens
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