Due to the large amount of rain
we receive on the West Coast, soil
pH can become very low. A low
soil pH (less than 6.5) suppresses
beneficial bacteria and can cause
the elements in the soil (particularly
phosphorus, calcium, magnesium and
sulfur) to be tied up in unavailable
forms that the plant cannot use. With
the turf depleted of nutrients, moss
or weeds can easily become
invasive, choking out the grass.
Lime should be applied once or
twice a year. Application rates
are 50# per 1,000 sq. ft. Apply
full rate if applying once a
year and apply half rate
if applying twice a year
(spring and fall).