Do you have clay or layer of hard subsoil problems in your garden?
Then gypsum may be the answer to help loosen the soil structure. It is not considered a miracle substance and you will find that it doesn't work right away, but a 3 year program of applications should help improve the poor soil conditions. It is not expensive and is easy to spread where needed.

Gypsum also has a job of repairing the soil that has been damaged through compaction from heavy stock, machinery, in the recovery of sub-soils exposed by earth movement and in soils affected by salinity.

A gardener faces one of the biggest problems in a new or established garden if they have a clay or layer of hard subsoil type of soil. This type of soil creates poor drainage, soggy soil and soil compaction.

When you have a new garden you can work organic humus, which should be done anyway, to loosen the poor soil. Manure, compost, peat moss and soil mulches and conditioners are normally used for this purpose.

You might ask, what do you do in an established garden?
A lot of work and time to recondition soil would be required. Gypsum may be just the answer for reconditioning the soil, because it can be spread on the surface of the soil like in the vegetable garden, flowerbeds or on the lawn. What this means is it does not have to be worked into the soil, it can just simply be spread on the surface.

What does Gypsum do?
It's main purpose is to penetrate the many clay particles in heavy or the layer of hard subsoil type soils and loosen the soil structure. Then this creates air and moisture slots that will loosen and break-up the soil structure.

Be aware that gypsum does not contain any major plant nutrients, so continue a regular fertilizing program even though it contains calcium and sulfur which is needed for plant growth. In addition, continue to put out organic humus as you plant.

Gypsum is easy to apply!
Just spread it on the lawn, using the granular type, with a lawn spreader at the rate of 40 pounds per thousand square feet. Gypsum fertilizer can be spread any time of the year and only one application per year is needed. To get it started working, water immediately after applying. If applied properly it does not affect the pH of the soil, not harmful to humans and your animals and will not burn. And because Gypsum is neutral and will not change the soil pH, you can use it in places where plants like Azaleas, Camellias, Rhododendrons and other acid loving plants grow, they need a little calcium too. Of course, gypsum should be applied per directions.

What is gypsum?
Hydrous calcium sulfate
Calcium Sulfate - CaSO4
Another Name: Gypsite

This article is provided courtesy of Basic Info for Organic Gardening Use the article but leave author box intact.