Amendments To The (Soil) Constitution

Did you know that fall is the most important season of the year for improving your soil?

You should be adding three things:  finished compost, raw organic matter, and organic nutrients.

Whether you are using your own homemade compost, or are purchasing compost in bags or by the truckload, stock up early with as much as you can afford. I use up a couple of yards of compost each fall (besides what I make in my own bins).

As you remove dead organic matter from your garden, apply at least a 3″ to 4″ layer of compost. While soil temperatures are still warm, the nutrients and organic matter in the compost will stimulate microbes and other beneficial organisms. Tired, end-of-season soil will be refreshed and renewed when spring comes around

Planting new shrubs, trees or other landscape plants?  Mix a few shovels of compost with the soil that goes back into the planting hole.

Raw Organic Matter

The soil in your vegetable garden will probably be laying fallow over the winter months (unless you’re lucky enough to garden year-round). To boost the amount of organic matter in your soil— beyond what you can get from finished compost— consider incorporating raw organic matter directly into the soil.

There’s just one thing to keep in mind when you’re adding raw organic matter to your soil. The beneficial soil organisms that will help decompose this material, require nitrogen to do their work. This means that if you don’t add some additional nitrogen along with the organic matter, the microbes will start using up the nitrogen in your soil. To avoid this, you can either add some nitrogen-rich manure along with the raw organic matter, or sprinkle on some granular organic fertilizer.

Shredded leaves are my top choice for raw organic matter. Use a leaf shredder if you have one. If not, just mow over the leaves several times with your lawnmower.

Animal manures (but not from dogs or cats) are great for the soil. You can gather it in buckets, plastic trash bags, feed bags, or in the back of a pickup truck. A good thing about adding animal manures in the fall, is that it doesn’t really matter if the manure is fresh or aged. Over the winter months, the caustic ammonia will dissipate, leaving behind valuable nutrients and organic matter.

Organic Soil Amendments

Most organic fertilizers release their nutrients slowly over many months, so applying them in the fall helps ensure they’ll be available to your plants next spring. If you can get your hands on some kelp meal,rock phosphate, or bone meal, do so. Because it’s the end of the season, your local garden center may even have some broken bags they’ll be willing to sell you at a discount. You can mix these organic materials right into your garden (or side dress around plants), along with the shredded leaves, manure and compost. Breaking down organic material requires some nitrogen.

If you suspect that your soil pH may need adjusting, autumn is the time to correct it. It’s best to raise or lower soil pH slowly, over a three- to six-month period. Add lime in the fall to raise the pH level of your soil. Add acidifiers like pine needles, peat moss and elemental sulfur if your soil is too alkaline. Remember that unless you already know that your soil is too acidic or too alkaline, you should always do a soil test to determine the pH level before taking corrective measures.

Better Soil — Better Garden

Improving the soil in your garden makes a huge difference in its ability to retain water, support healthy plant growth, and help your plants fend off diseases, pests and other stresses. Whether you’re new to gardening, or a seasoned pro, building better soil is the single most important thing you can do to improve your gardening success. And fall is the best time to do it!

9 thoughts on “Amendments To The (Soil) Constitution

  1. jmgoyder says:

    Educational – thank you!

  2. Ogee says:

    A good reminder for all of us who thought Fall meant we could relax!

  3. katiepede says:

    This begs the question…. would the soil be improved if honey were added?…. as (thanks to you) I have discovered that almost everything else is! 😀 x

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  5. Great post and a good reminder. You are so thorough!

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