Grass Expert
Grass and lawn care expert advice.

Soil pH

Lawn Aeration

Grass Seed - Types of Grass

Kentucky Bluegrass

Grass and Lawn Helpers

Clover planted among the grass in a lawn helps to fertilize the entire lawn. The symbiotic relationship clover has with microorganisms called diazotrophs helps to replenish nitrogen in the soil by drawing the nitrogen from the atmosphere. The diazotrophs live among the roots of the clover, infecting the roots. They then perform the function of nitrogen fixation by taking nitrogen from the atmosphere and making it available to the roots of the clover. The “fixed” nitrogen, however, isn’t yet available to the rest of the grass in the lawn. After mowing the clover, the nitrogen from its rotting foliage will be broken down by soil organisms into ammonia and nitrates, creating a rich fertilizer for grass.

Red Clover (Trifolium pratense L.)
The Pennsylvania State University Department of Crop and Soil Sciences recommends that red clover seed be planted at a rate of 10-12 lbs. per acre when planted by itself, or, when planted with another type of grass that this chart be followed:

Red clover 6-8 lbs./acre (mixed with one of the following)
+ Orchardgrass 4-6 lbs./acre
+ Perennial ryegrass 4-8 lbs./acre
+ Reed canarygrass 6-8 lbs./acre
+ Smooth bromegrass 6-8 lbs./acre
+ Tall fescue 8-10 lbs./acre
+ Timothy 4-6 lbs./acre