Excalibur BOOST Plumeria Fertilizer (10-12-14) 4 lbs (Includes Shipping)

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Excalibur BOOST Plumeria Fertilizer (10-12-14 with micro nutrients)

Contains 1-4 lb resealable bags.

Florida Colors Nursery was able to formulate a supreme-quality fertilizer BOOST with an NPK of 10-13-14 designed specifically for plumeria. With Excalibur BOOST your plumerias are receiving supreme-quality fertilizers and service from a plumeria grower you know and can trust.

Excalibur BOOST is a custom mixed fertilizer using water and controlled release technology formulated specifically for when Plumeria need extra nutrients. Excalibur is tested at 86 degrees, not 70 degrees. Excalibur BOOST uses a combination of Multi-coat and Poly-coat technology to achieve the release rate, which is moisture activated and is based on osmosis.

Excalibur BOOST is designed to give Plumeria that extra kick of important nutrients when they need it most:

  • After severe weather events (extended rain or heat waves)
  • After re-potting or transplanting, to minimize transplant shock
  • Newly rooted cuttings, promoting faster root growth
  • Seedlings when transplanting into pots
  • Root stock after grafting to give your root stock a kick to help heal the graft.

These are situations when a plant can be at its weakest and most vulnerable. BOOST uses a faster release process, with some nutrients formulated for a very quick boost and with others releasing over a few months.
Caution: Do not apply in direct contact with trunk. Works best when applied as a side dressing.

BOOST can be used any time without Excalibur VI and IX and BOOST can be used with Excalibur VI or IX if applied 2 months or more after the initial application.

Typical Usage Rates when using as a booster with or without Excalibur VI or Excalibur IX after re-potting or transplanting, for newly rooted cutting, and severe weather events (extended rain or heat waves): 
Do not apply in direct contact with trunk. Works best when applied as a side dressing.

  • 4-4 1/2" pot = 3/4 tablespoon
  • 6" - 1 gal pot = 1 tablespoon
  • 8” - 3 gal pot = 3 tablespoons
  • 5 gal pot = 4 tablespoons
  • In the ground 1 teaspoon per 1” trunk dia.


Total Nitrogen (N)  10.0000%
4.7860% Nitrate Nitrogen
4.4230% Ammoniacal Nitrogen
0.7910% Urea Nitrogen
Available Phosphate (P2O5)  12.0000%
Soluble Potash (K2O)  14.0000%
Magnesium (Mg)  2.8670%
        2.2080% Water Soluble Magnesium (Mg)
Sulfur (S)  4.7640%
        4.7640% Combined Sulfur (S)
Boron (B)  0.0540%
Copper (Cu)  0.1560%
        0.0660% Water Soluble Copper (Cu)
Iron (Fe)  0.5660%
        0.2250% Water Soluble Iron (Fe)
        0.1240% Chelated Iron (Fe)
Manganese (Mn)  0.4440%
        0.0840% Water Soluble Manganese (Mn)
Molybdenum (Mo)  0.0040%
Zinc (Zn)  0.1560%
        0.0660% Water Soluble Zinc (Zn)


Excalibur BOOST is applied dry and is best to cover with about an inch of two of soil for even distribution, it needs water to release nutrients. Designed to take in the with the water and warmth requirements of plumeria.  

Excalibur is a controlled release multi coated fertilizer designed to last approximately 6 months for Excalibur VI and 9 months for Excalibur IX (depending on which you use). 

How it feeds your plants:

  • Application of Water
  • Release of Nutrients
  • Decomposition of Poly coating

Advantages of controlled release fertilizers are that the nutrients are available gradually over time. This means that the gardener can fertilize less often, and the nutrients are provided slowly and steadily. This is how most plants prefer to be fed and helps them grow well. Granular fertilizers are easier to control because you can actually see how much fertilizer you're using and where it's being dispersed.

Fertilizers are a mix of nitrogen (N), phosphorus (P), and potassium (K). The ratio will be indicated by three numbers (the first is nitrogen, the middle number is phosphorous, and the third is potassium). We recommend a balanced fertilizer with micronutrients for plumeria with a NPK of 10-12-14 Excalibur Plumeria Fertilizer BOOST. 

Micronutrients - The Hidden Story...Often Only Delivered by Controlled Release Fertilizers!

There are several nutrients essential to plant growth and health that are only needed in very small quantities.

  • Magnesium (Mg) is an essential plant nutrient. It has a wide range of key roles in many plant functions. One of the magnesium’s well-known roles is in the photosynthesis process, as it is a building block of the Chlorophyll, which makes leaves appear green.
  • Sulphur (S)helps form important enzymes and assists in the formation of plant proteins. It is needed in very low amounts, but deficiencies can cause serious plant health problems and loss of vitality.
  • Boron (B) plays a vital role in a diverse range of plant functions including cell wall formation and stability, maintenance of structural and functional integrity of biological membranes, movement of sugar or energy into growing parts of plants, and POLLINATION and SEED SET.
  • Copper (Cu) is a component of some enzymes and of vitamin A. Symptoms of copper deficiency include browning of leaf tips and chlorosis.
  • Iron (Fe) is essential for chlorophyll synthesis, which is why an iron deficiency results in chlorosis.
  • Manganese (Mn) activates some important enzymes involved in chlorophyll formation. Manganese deficient plants will develop chlorosis between the veins of its leaves. The availability of manganese is partially dependent on soil pH.
  • Molybdenum (Mo) is essential to plant health. Molybdenum is used by plants to reduce nitrates into usable forms. Some plants use it for nitrogen fixation, thus it may need to be added to some soils before seeding legumes.
  • Zinc (Zn) participates in chlorophyll formation, and also activates many enzymes. Symptoms of zinc deficiency include chlorosis and stunted growth.

Derived From: Polymer Coated Ammonium Nitrate, Polymer Coated Ammonium Phosphate, Polymer Coated Monoammonium Phosphate, Polymer Coated Muriate of Potash, Polymer Coated Potassium Sulfate, Polymer Coated Sulfate of Potash, Polymer Coated Urea, Polymer-Coated Potassium Nitrate, Copper Oxide, Copper Sulfate, Elemental Sulfur, Ferric Oxide, Ferrous Sulfate, Iron EDTA, Kieserite, Magnesium Oxide, Magnesium Sulfate, Manganese Oxide, Manganese Sulfate, Polymer Coated Copper Sulfate, Polymer Coated Iron EDTA, Polymer Coated Magnesium Sulfate, Polymer Coated Manganese Sulfate, Polymer Coated Sodium Molybdate, Polymer Coated Zinc Sulfate, Sodium Borate, Sodium Molybdate, Zinc Oxide, Zinc Sulfate

9.999% coated slow release Nitrogen(N), 12% coated slow release available Phosphate(P2O5), and 14% coated slow release Soluble Potash(K2O)

We use Excalibur every year in our Plumeria Care Regimen:

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Warranty Information

Florida Colors Nursery's Guarantee to You.

Thank you for your purchase of Plumeria from Florida Colors Nursery. Please remember that plants are living entities and need care as such. Success with your new plumeria is tied directly to the amount of care it is given. Florida Colors Nursery was founded in 1976 and has been growing and selling plumeria sense 1992 and has been very successful because we are honest and fair in our assessments on guarantee claims.

Please call us with any questions you may have about plumeria care. Please visit this link to learn how to care for your plumeria.

ALL Plumeria are guaranteed to be the variety sold as.

Grafted plants are guarantee for four (4) months
Rooted plants are guarantee for three (3) months
Callused cuttings are guaranteed for two (2) months
Fresh cuttings and one (1) month (sold only to experienced growers)

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