When irrigation water is high in salt as one might expect from well water or reservoir water you will want to use ClayMend every 6 weeks.
Just one application of ClayMend will result in some improvement of your soil.  However you will get better results in plant growth with multiple applications.  Where clay is extremely compacted and where the soil can be worked we recommend a heavy initial application of ClayMend, maybe 2 or 3 times normal, and then 5 or 6 times throughout the first and every couple of months the second year.  After you notice significant improvement in your clay a spring and fall application should suffice.
Where clay is extremely compacted but existing plants restrict your ability to work ClayMend into the soil we recommend an application every 6 weeks for your first year.  The following year we recommend every two months and after that twice a year.

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