Before applying fertilizer or any other soil amendment, it's a good idea to see what the soil already contains. That way you won't be inadvertently increasing a nutrient the soil already has plenty of ...

But before you can design and build a retaining wall, you need to perform a site investigation and soil testing to determine ... for a retaining wall, you do need to know something about the ...

Did you know that one pound of phosphorus from excessive fertilization can produce anywhere from 300 to 500 pounds of algae if that phosphorus reaches a lake or river? Reducing excessive ...

One way is to go the commercial soil testing route which is usually more accurate than the inexpensive do-it-yourself soil test kits. The UC Master Gardeners do not offer a soil testing service, but ...

L.A. County Department of Public Health convened experts for a webinar that aimed to answer questions that residents have ...