What I learned by attending the most recent Twice on Tuesdays landscape class:
Fertilizer should have a 1-1 or at most a 2-1 ratio between the first number and third number (nitrogen and potassium, respectively).
15-0-15 is sufficient.
The total nitrogen content should be 15% (at least) to 30% (ipreferred) slow release. Determine the percentage of slow release nitrogen by reading the bag...look for terms as "water insoluble" or "polymer coated".
Fertilize April to October, 3-6 times total. Less is more. 4 applications, with maybe an iron supplement during summer, should be sufficient for most empire zoysia lawns.
Use no more than 1/4 in of water to wster in the fertilizer application. Never saturate in a fertilizer application. Do not apply fertilizer if heavy rains are forecast.
|