As a general rule soil analysis should be done at least every three years on home lawns. This is done by taking random soil from around the yard, mixing these thoroughly and taking about a pint of soil to the extension service. They will analyze the soil and make recommendations as to any amendments needed.    

FERTILIZATION

Feb. 15     Apply a pre-emergent chemical such as Atrazine or Ronstar for prevention of weeds. If turf is over-seeded with cool season grass, timing of pre- emergents will be different.

Mar. 31    If over-seeding has been done, steps should be taken to remove cool season grass whether by chemical or cultural means. Aeration is also recommended yearly when grass is actively growing.

April 15   Begin fertilization with a complete fertilizer (1 lb of Nitrogen/ 1000 sq ft) once danger of frost has past. If soil amendments were recommended by a soil analysis, use appropriate materials. Continue fertilization every 15 days altering between complete formula and ammonium nitrate (34-0-0) at the rate of 1 lb of N1 000 sq ft. continue this until Bermuda grass has recovered from winter damage.

July & August    Apply slow release fertilizer @ 1 lb of N/ 1000 sq ft.

Oct 15    Apply   5-20-20 @ a rate of 1 lb of P & K/1000 sq ft to winterize.