Leonard Fertilizers

The A.M. Leonard fertilizer line covers products formulated for the horticultural and landscape trade, from turf and plant feeding to specialty applications. As a supplier serving professionals since 1885, A.M. Leonard offers fertilizers chosen for the results that growers and grounds crews need across their work.

Match the fertilizer to the plant and the goal: turf, trees, container stock, and flowering plants have different nutrient needs, and the N-P-K ratio and release type should fit. Consider whether you need fast green-up or steady feeding. The right product depends on what you are growing and when, so match the formula to the application.

Granular fertilizers are spread on soil and release as they break down, suiting broad turf and bed feeding. Water-soluble fertilizers dissolve for application through watering or injection, giving fast, even feeding ideal for container and greenhouse production. Granular is simple for large areas; water-soluble suits precise, frequent feeding through irrigation.

Slow-release fertilizer feeds plants gradually over weeks or months, giving even growth, reduced burn risk, and fewer applications. It suits situations where consistent feeding and labor savings matter, like container stock and turf programs. The steady nutrient release avoids the surge-and-fade pattern of quick-release products and lowers the risk of over-application.

Apply at the labeled rate, do not exceed it, water in as directed, and consider slow-release products that release nutrients gradually. Burn comes from over-application and feeding stressed or wet plants improperly. Following the rate and watering in is what prevents the leaf scorch and dead patches that over-fertilizing causes.

Yes. Fertilizers are stocked in bulk and commercial quantities with volume pricing by quote. Operations running feeding programs across many properties or large growing areas benefit from ordering in volume ahead of the season for consistent product and pricing on every application.