50% Slow Release Nitrogen

Up to 3 Month Feed

High Magnesium

Essential Micronutrients

Low Chlorine (low salt)

In 2026, the 8-4-12 fertilizer ratio remains the gold standard recommended by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) for palms, but it is also highly effective for most landscape trees and shrubs in Florida.

Key Features & IFAS Requirements

For a fertilizer to meet UF/IFAS standards, it must satisfy specific formulation criteria to prevent common Florida soil deficiencies:

• The 2:1:3 Ratio: The analysis (8% Nitrogen, 4% Phosphorus, 12% Potassium) follows the specific 2:1:3 ratio research-proven to support optimal palm and woody ornamental health.
• Magnesium Content: The formulation is officially 8-4-12-4Mg. The "4" represents 4% magnesium, which is essential to prevent "frizzletop" and other chlorotic (yellowing) conditions in palms and shrubs.
• 100% Slow Release: UF/IFAS strongly recommends that Nitrogen (N), Potassium (K), and Magnesium (Mg) be in 100% controlled-release form. This ensures a steady nutrient supply for 2–3 months and prevents leaching into groundwater during heavy rains.
• Micronutrients: Quality 8-4-12 blends include essential trace elements like Manganese (Mn), Iron (Fe), Zinc (Zn), and Boron (B).

Application Guidelines

• Rate: Apply approximately 1.5 lbs of fertilizer per 100 sq. ft. of canopy area. For large individual trees, use 1 lb per inch of trunk diameter.
• Placement: Broadcast the granules evenly on the soil surface under the entire canopy (drip line), keeping the product away from the trunk itself.
• Timing:
  • Frequency: Apply 3 to 4 times per year (typically March, June, and September).
  • Watering: Lightly "water-in" the fertilizer with about 1/4 inch of water immediately after application to move nutrients to the root zone.
• Proximity to Water: Do not apply within 10 feet of any water body to prevent runoff pollution.

An 8-4-12-4 palm fertilizer provides essential nutrients (8% Nitrogen, 4% Phosphorus, 12% Potassium, plus 4% Magnesium) in a slow-release formula, crucial for palm health, preventing deficiencies, and supporting lush growth, with the numbers indicating N-P-K ratios and the '4' signifying added Magnesium, often combined with other micronutrients like Iron. These fertilizers, recommended by experts, use controlled-release technology for sustained feeding, applied evenly around the palm's drip line (away from the trunk) and watered in well.

What the numbers mean

• 8 (Nitrogen - N): Promotes overall green, leafy growth.
• 4 (Phosphorus - P): Supports root development.
• 12 (Potassium - K): Vital for disease resistance, stress tolerance, and structural strength.
• 4 (Magnesium - Mg): Essential for photosynthesis, preventing yellowing fronds, and improving color.

Key features of quality palm fertilizers

• Slow-Release:

Often uses polymer-coated granules (like PolyPlus OPTI) for consistent nutrient delivery over months, reducing leaching and surge growth.

• Micronutrients:

Include Iron (Fe), Manganese (Mn), Boron (B), etc., for deep green color and vitality.

• Formulated for Palms:

High Potassium (K) and Magnesium (Mg) content addresses common palm deficiencies in sandy soils.

How to apply

1. Calculate: Use rates based on trunk diameter (e.g., 3/4 lb per inch of trunk diameter) or square footage.

1. Spread: Apply evenly in a ring from near the trunk out to the drip line (the edge of the canopy).

1. Water: Water the granules in thoroughly after application to start the release and prevent leaf burn.

1. Timing: Fertilize throughout the growing season (e.g., Spring, Summer, Fall).

1. Avoid: Do not apply to dry soil or pile fertilizer directly on the trunk