Planning for the Fall lawn care season in Hawaii. El Toro Zoysia is especially disease prone in the fall and winter tropical climate. September is a transitional month for lawn care no matter where you live. Here in Hawaii Summer is just about over, the number of daylight hours are decreasing drastically and so is the intensity of the sun as the earth axis shifts. The temperatures remain about the same however the more rain is expected from now until the end of the year. This means that disease pressure is on the rise. Preparing now is crucial for a health lawn all year round.