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GARDEN
NOTES
March
10, 2005
There is no new Garden Notes column this week.
The compost connection
March
3, 2005
By
Abigail Higgins
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The
original ComposTumbler, one of three available models. Photo
by Susan Safford
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Moonlight
on snow! We have been receiving the gift of snow on a regular basis
(some would say too regular) this winter. Throughout the litany of
traffic accidents, delays, frigid temperatures, plumbing problems,
slippery footing, but no ice skating, snow days, and broken branches,
we may need to remind ourselves that in this latitude a toasty blanket
of snow over all benefits the natural world and our gardens. A toasty
blanket of snow is a humorous oxymoron for a beneficial condition.
Under the snow, the garden and its plants avoid temperature extremes,
so mortality is lessened among the marginal ones. Snowmelt delivers
water to the soil and aquifer at a stately, absorbable rate, compared
to the mad pace of rainwater run-off. Many creatures shelter and survive
more successfully through the bitterest part of winter due to snow's
insulating qualities. It is the rattle and hum of modern human activity
- the very thing we often cite as the cause of stress in life - that
winter's snow impedes, disrupts, and silences.
As is often the case in February, it had been very nice weather. I
had started in on yard cleanup with the pleasure that comes from having
been housebound more than usual this winter. For the second time since
November I had raked very large volumes of leaves and litter into
the poultry yard for the chickens to subdue into the rough compost
their incessant scratching and turning produces. (Readers of this
column are probably familiar with my quest-like search for ever-better
and more compost.) But when the level of leaves and litter was about
to engulf the chicken-sized exit door I knew I had to quit and find
an alternative.
The year before last I had had the privilege of visiting the garden
of Charles Cresson, a friend of a friend, in Swarthmore, Pa. The garden
is on the back of a suburban lot on a quiet street. Apart from the
superb, giant shade trees out front, there aren't many clues to what
lies behind. It is a micro universe of beautifully maintained specialist
collections: antique terracotta, alpines, water gardens (a diverted
arm of Crum Creek runs through the back of the lot), bulbs, hostas,
wild flowers, rose and peony collections, vegetable potagers, and
choice trees and shrubs. Towering proudly alongside heaps of wonderful
looking compost in the behind-the-scenes industrial parts of the gardens
stood two tall, over-sized compost tumblers. They were clearly well
used and there was no discernable brand name to make note of, but
I think that I must have mentally noted something like that's
for me!
When the results of my raking threatened to make prisoners of my chickens,
the light bulb went on in my head. And there, suddenly noticed in
the pages of the Old Farmers Almanac, was an ad for the equipment
I had seen in the Cresson garden. (ComposTumbler, 30 Wright Avenue,
Lititz, PA 17543, 1-888-820-5114.) Now I too have tall, over-sized
compost tumblers and high hopes for heaps of wonderful-looking, 14-day
compost made from the large amounts of garden waste that our clients'
gardens generate.
A yearly ritual
Gardens and compost are intricately connected in a number of ways;
at the risk of being repetitious, I shall reiterate a few. Adding
compost to vegetable and ornamental beds is a yearly ritual: what
is taken out must be replaced. Our soils paradoxically need organic
matter to drain and to hold water. The previously mentioned large
amounts of organic debris, that yardwork and gardening (not to mention
kitchen waste) generate, end up in the landfill or are incinerated
by SEMASS if not disposed of where they originate. When the wind blows
right, everything SEMASS incinerates comes back, airborne, to insult
us, our vegetation, and our surrounding waters with particulate matter
and air pollution. Ornamental vegetation and woodlands alike suffer
continuous stress from recent changes to the gaseous components and
make-up of our atmosphere and rainfall. They evolved under quite different
conditions for a very long time. Is it any wonder that microbial,
fungal, and insect opportunists find ways to feed off these struggling
host plants, one species after another?
The above deplorable circumstances mean that we shall need more and
more - yes, you guessed it - compost to assist our struggling plants
to pull through whatever crisis it is they are faced with, whether
is it a fall cankerworm or winter moth infestation, or a droughty
growing season.
At the recent New England Grows educational conference I took in the
talk of Ohio State University professor Harry Hoitink Ph.D., Adding
Compost, Mulch and Beneficial Microbes to Your Disease Suppression
Arsenal. His work has shown how biocontrol agents suppress plant
pathogens and induce systemic resistance to disease in plants. He
is currently looking at how organic matter transforms in composts
to sustain biocontrol agents and on composting procedures that enhance
activity of these microflora. I hope to be able to write about that
work in somewhat greater depth in a future column, but we don't always
need to know how it works, only that it does. The short-term conclusion
is that trying times for plants = more compost.
Heating things up
The compost tumblers I have bought are an additional component part
of my system, which will enable me to previously been
able to do. I have always had to make many heaps, or piles, due to
the sheer volume of what I take in. The piles, because they eventually
rot but are not hot, have cycle through more material
into usable compost than I have introduced pest material from client
gardens, like land snails and the weed henbit, to our premises. Furthermore,
they encourage rodents and take up space. I also utilize a Green Cone
solar digester that takes care of food waste that cannot be given
to poultry or that attracts rats. But the Green Cone only enriches
the ground where it is installed. It does not yield up usable compost
and is easily over-burdened by the volume of our waste stream. The
poultry do their thing, and it is quite satisfying to see the volume
of material in their yard shrinking and transforming. With the compost
tumblers it is still necessary to add green matter (nitrogen) to the
drum at a ratio of about four parts to one of brown matter (carbon)
in order to make fourteen-day compost. Then the drum is cranked over
every day until the compost is mixed, heated, and cooked. But the
drums are well off the ground and rat-tight, and once the compost
is finished it is possible to drive the wheelbarrow or cart directly
beneath the door and dump it in. While one unit is cooking the other
can be loading. I can hardly wait! |