Soil Type and Modification
The ideal soil is called "loam." It is made up of various mineral particle sizes ranging from fine clay to sand; not too sticky-gooey and not too sandy.
Jar testing for Soil Type
THE "FEEL TEST"
Sandy vs. Clay Soil
WHAT TO DO
Find out what you are working with. Use the method above for basic information, or get a soil test; they only cost about $25. The soil test will tell you what type of soil you have, the nutrient levels, and the pH. Many reports will provide helpful recommendations based on your results.
List of soil testing facilities in the SAWPA region:
Riverside Corona Resource Conservation District, Riverside (951) 683-7691, rcrcd.com
Waypoint Analytical, Inc., Anaheim (714) 282-8777, waypointanalytical.com
Test America, Inc., Irvine (949) 261-1022, testamericainc.com