Fairfax County is known for a lot of great things, but fluffy organic soil isn't one of them. Our famous shrink-swell Marine clay presents more "swell" problems than its name lets on. Luckily, ...

Fall testing is ideal because it gives you plenty of time to get results back from the lab and to begin improving your soil ...

Some plant problems can be indicative of other issues besides soil quality. Soil tests can reveal and diagnose nutrient deficiency or improper pH balances. After using a soil test, you will know what ...

The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...

Swelling soils (also called expansive soils) are present in many areas of the country, but Colorado is one of the most severely affected by swelling soils problems because of the particular climate ...