Home
Turn over a new leaf by composting
01:00 AM EST on Sunday, November 16, 2008
WASHINGTON — November is the month when nature’s solar panels, leaves, detach themselves from their mother trees and shrubs, and fall to the ground. It’s interesting to observe how people react to this phenomenon.
For some, each fallen leaf is an insult, every descent an act of wanton littering. By now, the neatniks are out there daily, gathering the leaves by rake or blower, bagging them or forming neat piles by the curb. One can only imagine their pain, having spent a weekend picking up each leaf, only to lie in bed listening to the wind undo all their work.
Then there are others who don’t bother at all, and let leaves pile up through the winter. This is not good. Apart from the untidiness of it, matted leaves can kill grass and accumulate, harmfully, in the crown of plants.
I fall somewhere in the middle, picking up leaves on the lawn with the mower on weekends and pouring the mixture of leaf and grass clippings into a couple of compost piles. And when the garden beds are smothered in magnolia, oak and locust leaves, out comes the blower. I attend to this when I can, and if the garden floor is leafless by Christmas, I’m happy.
In this age of thrift and environmental concern, it seems bizarre that we then bag or curb our leaves to be taken away. And to where? Yard waste makes up 13 percent of our trash, according to the Environmental Protection Agency. Many municipalities divert this away from landfills and into composting yards, where the leaves are shredded and piled into steaming mounds that are halfway decayed come spring; enterprising gardeners then collect it and return it to their yards.
Wouldn’t it make more sense, though, to keep the leaves on-site?
There are three ways of doing this — composting, creating a leaf mulch and making leaf mold — and you may have to employ all of them if you have a lot of old trees and the leaf drop is significant.
The importance of compost cannot be overstated. I got a behind-the-scenes look at two gardening institutions in the past year, Longwood Gardens in Kennett Square, Pa., and Prince Charles’ garden at Highgrove in the English Cotswolds. In both places, the emphasis on compost production was paramount.
There is no better ingredient for soil improvement or for feeding the creatures of the soil that are so important for the well-being of our plants. But making compost scares a lot of people, who fear that heaps will be unsightly, attract vermin and stink. All those concerns are real, and perfecting the art of compost-making is difficult. But if you follow a few basics, you can avoid those pitfalls.
A compost pile should be large, about a cubic yard in volume, to create the critical mass for the decay organisms. It should be kept moist but not wet, and it should be turned occasionally with a pitchfork. The microbes that break down the pile need a mixture of carbon for energy and nitrogen for growth and generally a lot more of the brown carbon than the green nitrogen. Nitrogen can be found in such things as vegetative kitchen scraps, waste from the vegetable garden and grass clippings. Carbon can be found in such things as straw, wood chips and leaves.
Anything you can do to shred the ingredients first will speed their decay markedly. A pile that is balanced with brown and green material, kept evenly moist and turned will see the alchemy of 150-degree heat and rapid conversion into crumbly finished compost. But few compost piles in the real world attain that consistently, and the conversion simply takes a lot longer, as much as a year.
I have two bins, one an elaborate, four-sided, bottomless box of wood and metal mesh, the other a simple loop of chicken wire. I am not a big fan of tumbler bins because they’re expensive and fill up quickly. Friends have enclosed bins of recycled plastic. They work well and keep out animals. They are fine for small urban gardens with moderate streams of green waste, but I’d need about 20 of them to handle the leaves in my yard.
In an open area in front of my bins, I assemble leaves into piles 12 inches high, six feet long and three feet across, and run the mulching mower over them back and forth. This converts them into shreds about the size of postage stamp. The pieces are scattered by the mower but are easily raked into a pile. They are used as the main brown material in both compost bins.
I pile the material high in the bins, knowing that the volume will halve as it decays. But the leaves keep coming, so I then rake the shreds and cart them to my flower and shrub beds. I use it as a mulch, laid two to three inches thick. The earthworms and other soil dwellers start the process of conversion, but this is a slow way to do it, and it takes a year for the litter to break down.
| Animal Behaviorist, Christine Johnson | |
| Providence College's 'grunge' edition of Romeo and Juliet | |
| Brown engineering students race cars you can compost |
More home stories
Most Viewed Yesterday
The hunt for Stephen Saccoccia’s hidden assets
Vehicle fatalities climb in R.I.
Suspect shot during struggle with undercover officer
Patriots journal: Belichick says Moss is smartest receiver he’s seen
Most active surveys
What's your favorite breakfast/lunch place?
React to Carcieri's veto of R.I.'s first saltwater fishing license
Are the Yankees on the brink of another dynasty?
Will you allow your children to be vaccinated against swine flu? Why or why not?
Is it a bad thing or a good thing that prostitution is legal in Rhode Island, indoors?
Most e-mailed in the last 24 hours
Reader Reaction









You must be logged in to contribute. Log in | Register Now!
You are logged in as screenname | Log Out
You are logged in, but do not have a "screen" name. Create a Screen Name