Fertilizing isn’t a one-size-fits-all endeavor. Different types of plants each have their own nutrient requirements and should be fertilized at varying times, and in different quantities. Some fertilizers promote root growth, while others encourage flowering.

Additionally, standard recommendations for other parts of the U.S. are often inappropriate for South Florida’s unique climate. It’s one of the primary reasons that many homeowners prefer to hire a professional landscaper that has in-depth experience and knowledge of South Florida weather conditions and plant species.

It’s important to understand the composition of fertilizers. They will feature three numbers, such as 12-12-12, that indicates the primary nutrients and the quantity. The first number indicates the amount of nitrogen, the second is the amount of phosphate, and the third is the amount of potash/potassium. Fertilize is typically needed more during the warm, wet growing season and less in the cool, drier months.

Nitrogen promotes photosynthesis, rapid growth, lush foliage and fruit. Phosphate is required for respiration, energy, root growth, and strong, robust plants from seedling to maturity. Potash aids plants in absorbing moisture, utilizing a range of nutrients, boosting disease resistance and hardiness, and producing abundant blooms.

Bushes and Trees

In general, established bushes and trees do well with two or three applications of fertilizer each year. Typically it’s applied about February and October, with another during the summer if needed. Fertilizer for trees and shrubs should be applied at the drip line, not around the trunks or base.


Fertilizer should be applied to lawn grass in the spring, but only when it’s actively growing and creating new shoots. That typically happens about mid-April. Use a time-release formula before any fertilizer restrictions go into effect and applications should take place approximately every 6-8 weeks during the summer. It’s better to err on the side of caution when fertilizing the lawn and take into account the type of grass and its needs.


Perennial flowers and bulbs can benefit from occasional fertilizing, but be careful when applying it near newly planted flowers. It can be a good idea to give them a little time after planting to acclimate and become established before fertilizing.

Native Plants

Native plants, grasses, and flowers have adapted to the prevailing conditions and generally require little fertilizer – if any. Fertilizing native species can actually do more harm than good.


RCH Landscaping is a full service landscape company based in Boca Raton, Florida. We design, install, and maintain Commercial and Residential landscapes all around Boca Raton, Delray Beach and The Palm Beach areas. Our team of highly skilled landscape technicians have an undisputed track record of creating and maintaining beautiful commercial and residential landscapes all over South Florida.

Contact RCH Landscaping Today for a Free Estimate