Fertilizing a Citrus Tree

Use a fertilizer specifically for citrus plants, fruit or nut producing plants. These fertilizers have elements required for fruit production. It is also recommended to use foliar applied micronutrient nutritionals that citrus trees crave—they provide additional “vitamins” your trees will love. GrowScripts has a great nutritional that is based on what has been proven in the citrus industry. You can find more information about GrowScripts products for homeowners by visiting www.GrowScripts.com.

Newly Transferred and Mature Citrus Trees 

For the first three years of newly planted trees it is recommended to fertilize from late February thru the first of October about every 6 weeks to establish a larger, fuller canopy on your citrus tree. (Note: slow release fertilizers will be less often, follow label directions.) Spread fertilizers evenly under canopy. Granular fertilizers can burn tree roots and cause issues if used to heavily. It is recommended to use a slow release fertilizer high in nitrogen and potassium as that is what newly transplanted and established trees look for most. Citrus trees are heavy feeders and can benefit from 3-4 slow release feedings throughout the suggested fertilizing months above. Along with fertilizing with a product such as an 18-5-10 Control Release consider additional applications of Essential Micronutrient Nutritionals as their label directions suggest.


Balanced nutrition of plants should be a high priority management objective for every citrus grower. Plants require a balanced nutrition program formulated to provide specific needs for maintenance and for expected production performance. Properly nourished fruit trees or plants grow stronger, produce more consistently, have better disease resistance, and are more tolerant to stresses. Source: Plant Nutrients for Citrus Trees an IFAS published document #SL 200. First printed: January 2003. Reviewed February 2009.

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Products We Recommend

Citrus Tree Micronutrient 

GrowScripts Citrus Tree Micronutrient Nutritional is a formulation of micronutrients most often found deficient in Citrus. It is a product formula based on what is proven successful in the commercial citrus industry.

Kits and Subscriptions

GrowScripts is the next step in growing your baby successfully. Providing a simple, user-friendly, way to nurture citrus trees without all the guesswork. They've developed feeding programs that anyone can subscribe to.  

NPK Macro- Nutrients

With a coating based on temperature your tree will get the Macronutrients (NPK) needed through diffusion. When triggered this control-release product allows for feeding over months and not weeks.