Excalibur Plumeria Fertilizer

Excalibur BOOST Plumeria Fertilizer NPK 10-12-14 Includes Shipping

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Excalibur BOOST
Usually: Ships in 5-7 business days
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When needed, releases over 2-3 months
Spread and best to cover with 1"-2" of soil.
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  • Excalibur BOOST Plumeria Fertilizer NPK 10-12-14 Includes Shipping
  • Excalibur BOOST Plumeria Fertilizer NPK 10-12-14 Includes Shipping
  • Excalibur BOOST Plumeria Fertilizer NPK 10-12-14 Includes Shipping
Now: $25.00 - $70.00


Excalibur BOOST Plumeria Fertilizer
(10-12-14 with micronutrients) Free shipping!

Discover the Benefits of Excalibur BOOST Plumeria Fertilizer

At Florida Colors Nursery, we understand that plumeria enthusiasts like you want the best for your beloved plants. That's why we've introduced Excalibur BOOST Plumeria Fertilizer—a premium slow-release fertilizer with an NPK ratio of 10-12-14, enriched with essential micronutrients. This specialized formula is designed to nurture and enhance the growth of your cherished plumeria plants, ensuring they reach their full potential.

Unmatched Quality and Expertise

Excalibur BOOST is the result of a collaboration between Florida Colors Nursery, a trusted name in plumeria cultivation, and cutting-edge nutrient technology. Our team's extensive expertise, combined with the latest advancements in fertilizer science, has resulted in a product that consistently delivers exceptional and efficient results.

Fortified with Boron for Optimal Growth

What sets Excalibur BOOST apart is its recent enhancement with BORON—an essential micronutrient for plumeria health and vitality. With this critical addition, Excalibur BOOST takes plumeria care to new heights, ensuring your plants receive the precise nutrients they require for vigorous growth and vibrant blooms.

Tailored to Plumeria's Unique Needs

Excalibur BOOST features an optimal NPK ratio of 10-12-14, perfectly tailored to meet the specific requirements of plumeria plants. This fertilizer has quickly established itself as the gold standard among plumeria enthusiasts, thanks to its remarkable ability to promote healthy development and stunning blossoms.

Advanced Controlled Release Technology

Excalibur BOOST stands out for its commitment to excellence. Unlike other fertilizers, it undergoes rigorous testing at 86°F to ensure its effectiveness, even under challenging conditions. We've employed cutting-edge controlled release technology, combining Multi-coat and Poly-coat techniques, to achieve a precise nutrient release rate. This release rate is activated by moisture and follows osmosis principles, providing your plumeria plants with a consistent and gradual supply of nutrients.

Shipping Included for Your Convenience

When you choose Excalibur BOOST, you benefit from top-notch fertilizers and enjoy the convenience of shipping included with your purchase. It's our way of ensuring that your plumerias receive the care they deserve with minimal hassle.

When to Use Excalibur BOOST

Excalibur BOOST is specially designed to provide plumeria with essential nutrients during specific growth stages and challenging situations. Consider using Excalibur BOOST:

  • After severe weather events like prolonged rain.
  • After re-potting or transplanting to minimize transplant shock.
  • After cuttings have rooted to promote faster root growth.
  • After transplanting seedlings into pots.
  • After grafting to facilitate faster healing.

These scenarios are when plumeria plants can be weakest and most vulnerable. Excalibur BOOST offers a faster release process, with nutrients formulated for a quick boost and others releasing gradually over a few months.

Application Tips

Excalibur BOOST is a water-soluble granular fertilizer that lasts for 2-3 months. To activate its nutrient release, ensure you water your plumeria well after application.

How Excalibur BOOST Feeds Your Plants

  • Application of Water
  • Release of Nutrients
  • Decomposition of Coating

Usage Rates

Here's a handy guide to help you determine the appropriate amount of Excalibur BOOST for your plumeria:

  • 4-4 1/2" pot = 3/4 tablespoon
  • 6" - 1 gal pot = 1-2 tablespoons
  • 8” - 3 gal pot = 3 tablespoons

For more accurate application, consider the size of your plant and its root ball. Typically, use one tablespoon per 1” trunk diameter near the soil line. Each 4 lb package of Excalibur BOOST contains approximately 120 tablespoons.

Micronutrients: The Hidden Story

Excalibur BOOST includes essential micronutrients vital for your plumeria's growth and health. These nutrients are needed in small quantities but play crucial roles:

  • Magnesium (Mg): Essential for photosynthesis and overall plant health.
  • Sulphur (S): Aids in enzyme formation and protein synthesis.
  • Boron (B): Crucial for cell wall formation, pollination, and seed set.
  • Copper (Cu): Essential for enzyme functions and vitamin A.
  • Iron (Fe): Required for chlorophyll synthesis.
  • Manganese (Mn): Activates enzymes and aids in chlorophyll formation.
  • Molybdenum (Mo): Supports nitrogen fixation in some plants.
  • Zinc (Zn): Participates in chlorophyll formation and activates enzymes.


Excalibur BOOST Plumeria Fertilizer contains a meticulously selected blend of nutrients, including:

  • 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)

How Excalibur BOOST Works

Excalibur BOOST is applied dry and should be covered with about an inch or two of soil for even distribution. This water-soluble fertilizer requires moisture to release its nutrients effectively.

The Advantages of Water-Soluble Fertilizers

  • Nutrients are available gradually over a shorter time frame, which most plants prefer.
  • Nutrients are provided steadily over 2-3 months (depending on watering frequency).
  • Granular fertilizers offer better control over usage and distribution.

Choose the Best for Your Plumeria

When it comes to fertilizing your plumeria plants, choose the best. With its carefully crafted blend of macronutrients and essential micronutrients, Excalibur BOOST Plumeria Fertilizer is your trusted partner for nurturing vibrant and healthy plumerias.

Try Excalibur BOOST Today

Join plumeria enthusiasts who have trusted Excalibur for the past eight years. Experience the difference between precision-crafted fertilizers designed to meet the unique needs of plumeria. Choose Excalibur BOOST for optimal growth and blooming potential in your cherished plumeria plants.

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)

Check out our new Plumeria Care Guide website!

We use Excalibur every year in our Plumeria Care Regimen:

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9 Reviews

  • 5

    They are finally blooming!

    Posted by Jessica Smith on Sep 14, 2021

    I've had plumeria trees for about seven years now and this year they are finally blooming. I don't know if the Texas cold snap on February had anything to do with it, but my trees have never looked this good or bloomed. This stuff is great!

  • 5

    Great stuff

    Posted by Lisa Tetzlaff on Aug 26, 2021

    This is the bomb!!! My plumerias love this stuff!!!! They grow so well and get so dark green. Well worth the bucks

  • 5

    Better than I even was told

    Posted by Laurieanne Morse on Aug 25, 2021

    I highly recommend this! My babies are growing healthy and happy.

  • 5

    The best fertilizer on the market

    Posted by Justin Poindexter on Jul 26, 2021

    Great product. Best Plumeria fertilizer you buy.

  • 5

    Started using Boost this year on my seedlings. Noticing larger and more healthier plants. Expecting by the end of this season to have much larger seedlings to start off next year.

    Posted by Bill Miller on Jul 02, 2021

    Every bit as good as Excalibur IX and IV.

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