Fertilization of warm season grasses can be continued throughout the year and through all seasons in many areas. This allows us to more easily manage the nutrients which go onto our lawns to achieve the greatest results for our lawns in all seasons of the year.
Warm Season Grasses include lawn types such as Bermuda Grass, Centipede Grass, Zoysia Grass and Saint Augustine, all these grasses are most easily recognizable by the runners (stolons) which intertwine with each other to form the lawn and allow it to re-grow, repair itself and spread.
A good fertilizing regime for Warm Season Turfgrasses should begin at the beginning of Spring using a high quality granular lawn fertilizer, from that first application, further applications of lawn fertilizer should be applied every two months throughout the growing seasons of Spring, Summer and Fall.
The last application of Lawn Fertilizer which is due in the Fall should be a Winter style of fertilizer which will enable the lawn to best prepare itself for the colder weather of Winter. This same Winter style fertilizer can continue to be applied throughout the Winter months if Winters are mild in your area. We simply apply it like regular fertilizer, still following the same two monthly application routine. A Winter style lawn fertilizer is much the same as regular lawn fertilizers, with a slightly different nutrient make-up, and the addition of the most important nutrient for Winter Lawn Care which is Iron.
If applying a Winter Fertilizer which contains Iron, it is highly important to wash down any pathways surrounding the lawn which may have had some stray fertilizer granules land on it. If not washed off, the Iron content can break down on the pathways and permanently stain them with rust.
The application which is due in the middle of Summer can often be considered optional, the rule of thumb of fertilizing a Warm Season Lawn for the Summer application is if the lawn is already flourishing and doing very well at this time, then there is often no need to fertilize, so this application can be ignored. However, if the lawn is not doing so well or is lacking health or vitality at this time, and enough water is being applied for the lawn to be actively coping with the heat, then by all means... put an application of fertilizer down at this time, and being careful not to apply fertilizer on days of extreme heat over 100 degrees F, Also ensure that the lawn can be watered immediately after this application so the fertilizer can be dissolved into the soil as quickly as possible.
Any fertilizer residue left on the leaves of the lawn in temperatures of extreme heat can burn, damage or even kill areas of turf. The Nitrogen in fertilizer is responsible for this which is the reason for the importance of watering the fertilzer into the soil as fast as possible after application.