Magnesium deficiency (mid-canopy) & potassium deficiency (lower canopy) on a Canary Island date palm. T.K. Broschat, UF/IFAS


Fertilize: palms and ornamental shrubs. See: 

Palm Nutrition and Fertilization:  and 

Landscape Fertilization: http://edis.ifas.ufl.edu/topic_landscape_fertilization

Fairchild garden Palm Expert on Smart Palm fertilization



FLORIDA FRIENDLY FERTILIZING - Prevent Pollution and Maximize Plant Health

Fertilize Appropriately – Excellent Pdf with information clearly presented:


How to read a fertilizer bag and choose the appropriate fertilizer:


The website below includes the following tips and much more information.


• Follow UF/IFAS recommendations. Ideal rates, application timings, and formulas are different for different plants.

• Choose slow-release products. Look for fertilizers with slow-release nutrients. They should include potassium and little or no phosphorus.

• Keep fertilizer off hard surfaces. If fertilizer gets spilled on a hard surface (like a driveway), sweep it up and dispose of it. Fertilizers can wash into storm drains and from there into a nearby water body.

  • Avoid using “weed and feed” products. These contain herbicides and fertilizer together.

    • These products can injure trees and shrubs. Tree and shrub root

systems can extend far beyond the canopy drip line, intermingling with turf.

  • Pesticides should be applied only to affected areas, rather than broadcast over the entire yard as occurs with a weed and feed product.

  • The appropriate timing is often different, with pre-emergent herbicides applied far earlier than fertilizer. This almost ensures that one or the other is ineffective, if not harmful.

  • Apply an iron source instead of a nitrogen fertilizer. To green the lawn without increasing growth in the summer, use chelated iron or iron sulfate.

Fertilizers in Compliance with Local Fertilizer Ordinances include: 

Lowes good info on fertilizer


Organic fertilizers, soil conditioners and soil additives include

  • Blood meal: a byproduct of the meat-packing industry. Steamed and dried, it's high in phosphorous.

  • Bone meal: another byproduct of the meat-packing industry, bone meal contains calcium and phosphorous, essential elements for plant growth.

  • Fish emulsion: a fish-processing byproduct. Mild, nontoxic and organic, fish emulsion is good for tender plants that may suffer fertilizer burn.

  • Compost: one of the best all-around garden materials for soil improvement.

  • Composted manure: for soil conditioning or use in the compost pile.

  • Peat moss: an amendment that aerates and lightens heavier soils such as clay. It adds mass to sandy soils to reduce the leaching of nutrients.











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