Let’s Talk About Dirt

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Let’s Talk About Dirt

Lots of gardeners take their soil for granted. Knowing a few basics, many of us want to get on to the “fun” part of choosing our plants, designing our borders, and generally get everything growing. But sooner or later we have to deal with the dirt.

Most of the time we get the fundamental idea of whether our soil consists of clay, loam, or sand and sometimes we pay attention to the pH… but do we know the soil profile we are working with? Do we know its assets and drawbacks? Well, if you are interested I have a place for readers to start: The National Resources Conservation Service’ Soil Survey site. It has loads of information and is pretty easy to use. Being an ongoing project, they may not have your county online yet, but in that case you can contact your county extension agent to request a hard copy soil map. Here’s the Ohio counties info. And, by the way, did you know your state has a state soil, like a state bird or state flower? Yep, those politicos think of everything.

Years ago, when first moving to my rural home, the real estate agent thoughtfully provided the county extension offices soil map survey to me. It had aerial maps with soil types mapped onto them, and explanations of the soil profiles. There were also lists of trees, etc, and land use charts for the soil types. I have always appreciated this information, and it helps gardeners make long range soil amendment and planting plans. It doesn’t replace personal observation, but supplements it with expert evaluation.

Compost

It seems that you can’t discuss soil without the topic of compost coming up at some point. Compost is the way we improve the tilth* of the soil, add fertility, … it is the commerce of “organic matter” that is listed every time one is advised to improve their soils in a large number of circumstances. Heavy clay soil? add organic matter (humus). Sandy fast draining soil? add organic matter. Moisture retention? add organic matter.
Yes, we get it. So however we decide we want to attain it, it helps to set up our own compost manufacturing area. Which reminds me. There is something new on the horizon in composting: Bokashi composting.
I also came across this tidbit of info: “compost can suppress plant disease. Israeli researchers discovered that vegetable and herb seedlings raised in a mix of 40% vermiculite, 30% peat moss, and 30% composted cow manure grew faster, with less incidence of disease, than those raised in a 40% vermiculite/60% peat moss mix” – ATTRA. One key element in composting is the heat from the heap that destroys organisms. Composting can be a whole lot of science, but for most of us, we just muddle along with rotting things down.

A component of composting is earthworm activity. Lindis’ experience is ideal for discovering this underground world. Make the earthworms happy, I say. They do good things for your soil.

A worm blog, and DIY directions for making rain barrels, etc.

Potting Soil

Garden soil isn’t all there is to know. A whole world of soil attributes are contained in … potting soil. You can mix your own or buy soils designated for about any purpose under the sun. I always liked getting my soils for pots at WalMart or K-Mart, but in the early days I mixed my own. I just found that obtaining things like oak leaf mold was pretty pricey. Here are a few links to follow to know more about potting soils and how to make your own: National Organic Standard on the ATTRA site, HGTV,The Best Potting Soil, Potting Soil Recipes

So what do you want to know about your soil? The composition, proportions of clay, sand or loam. The pH, is it an acid, neutral, or alkaline soil? What are the known fertility problems, if any? Magnesium deficient? What can you do to increase the nitrogen? When do you want more potash? Or potassium? Take your time and familiarize yourself with your dirt, it can be fun and pays off in better blooms and produce. We all want that!