Excalibur Plumeria Fertilizer IX - NPK 11-11-13 Includes Shipping

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Usually: Ships in 5-7 business days
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Once for a 9 Month season
Spread and best to cover with 1"-2" of soil.
Now: $26.50 - $50.00

When ordering plumeria and fertilizer on the same order they will be shipped in separate boxes to protect the plumeria from damage and they may arrive on different days.


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Excalibur Plumeria Fertilizer IX (NPK 11-11-13) 9 month slow release (Includes Shipping)

NOW WITH BORON. Excalibur Plumeria Fertilizer was developed by combining Florida Colors Nursery’s expertise growing plumeria with the latest advancements in nutrient technology, Florida Colors Nursery’s Excalibur fertilizers have proven to provide highly effective and efficient results.

We were able to formulate a supreme-quality fertilizer with an NPK of 11-11-14 designed specifically for plumeria. Introduce only a few years ago, Excalibur has become the standard which other fertilizers are judged for growing plumeria. Excalibur is just what you need to assure your plumeria is getting what it needs to grow and bloom at it's full potential. With Excalibur your plumerias are receiving supreme-quality fertilizers and service from a plumeria grower you know and can trust.

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

Comes is 4lb bags

Why Use Excalibur?

  • Excalibur: designed specifically for Plumeria
  • Excalibur: promotes healthy even plumeria growth
  • Excalibur: high quality 11-11-13 NPK granular fertilizer with Micronutrients
  • Excalibur: available as a 11-11-14 6 month or 11-11-13 9 month controlled release fertilizer
  • Excalibur: designed to release nutrients as your Plumeria needs them to thrive 
  • Excalibur: uses water activated polyon coated ingredients and heat to release nutrients
  • Excalibur: formulated by Florida Colors Nursery with over 30 years of experience growing Plumeria
  • Excalibur: not only sold by Florida Colors Nursery but we use it on all of our plumeria
  • Excalibur: exclusively sold by Florida Colors Nursery or an approved agent
  • Excalibur: backed by one of the largest national fertilizer companies
  • Excalibur: approved to sell in every state the Continental US and Hawaii

Typical Usage Rates:

This should help you calculate how much fertilizer you need for your plumeria.

  • 4-4 1/2" pot = 3/4 tablespoon
  • 6" - 1 gal pot = 1-2 tablespoons
  • 8” - 3 gal pot = 3 tablespoons
To be more accurate it depends on the size of your plant. The larger the plant the larger the root ball. Using a rule of 1 tablespoon per 1” trunk dia. near the soil line.

Each 4 lb package contains approximately 120 tablespoons.

Excalibur should be applied dry and for best results covered with about an inch of two of soil for even distribution and watered well to release nutrients.

Excalibur is a controlled release multi coated granular fertilizer designed to release nutrients when plumeria need them during their growing season.  The release rate has been calabrated to last approximately 6 months for Excalibur 11-11-14 and 9 months for Excalibur 11-11-13. 

How it feeds your plants:

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

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 11-11-14 or 11-11-13 Excalibur. 

Micronutrients - The Hidden Story...And, 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. These are manganese, copper, iron, chlorine, and molybdenum and zinc. 

  • Chlorine is necessary for osmosis and ionic balance; it also plays a role in photosynthesis.
  • Copper is a component of some enzymes and of vitamin A. Symptoms of copper deficiency include browning of leaf tips and chlorosis.
  • Iron is essential for chlorophyll synthesis, which is why an iron deficiency results in chlorosis.
  • Manganese 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 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 participates in chlorophyll formation, and also activates many enzymes. Symptoms of zinc deficiency include chlorosis and stunted growth.
  • Boron 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.


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. Success with your new plumeria fertilizer is tied directly to the ability of your plumeria to absorb nutrients and the mount of care it is given. Please check you pH levels to be sure you are within 6.1-7.0 to allow your plumeria to absorb the nutrients in Excalibur. 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.

Excalibur has 5 year shelf life if kept cool and dry.

Excalibur is guaranteed to contain the ingredients as described on it's label

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21 Reviews

  • 5
    Formulated just for plumerias

    Posted by Joyce L Wheeler on Jul 02, 2021

    Only requires 1 application each seasons Lots of blooms and great plant growth

  • 5

    Posted by Loren on Jul 01, 2021

    I have been growing Plumeria trees since 1990. Excalibur Plumeria fertilizer has outperformed every Plumeria food (chemical and organic) I have ever used...and I have used a lot! This year marks my second consecutive year of using Excalibur, and the results are wonderful: dark green, healthy leaves, loads of flower inflorescences and new branching. Florida Colors Nursery definitely has a wonderful fertilizer in Excalibur...I'm really glad I found out about it and bought some!

  • 5
    Excaliber Review

    Posted by Paul Tremblay on Jul 01, 2021

    Once a year and you are done. This is the fertilizer of choice for all of the successful plumeria enthusiasts use at SCPL

  • 5
    Excalibur Plumeria Fertilizer IX NPK 11-11-13

    Posted by Mary Jane Fortney on Jun 23, 2021

    My favorite fertilizer is Excalibur Plumeria Fertilizer© from Florida Colors. I am currently using the 9-month, slow release, 11-11-13 NPK with enhanced micronutrients. It is a supreme quality fertilizer designed for plumeria. Since the majority of my plumeria collection are in 10-gallon black nursery pots, we apply 8 tablespoons to each in early April. If the trees are not to be repotted that year, we top the fertilizer with an inch or so of soil along with an inch of fresh bark mulch. One advantage of using this slow- release fertilizer is that this is done only once a year—at the beginning of the growing season. I have had excellent results with Excalibur!

  • 5
    I've only started using this product in April of this year.

    Posted by Darla on Jun 20, 2021

    I joined the Southern California Plumeria Society last year due to their having their meetings on Zoom due to the virus. In doing so, I've gotten a lot of rave reviews from some of the long time plumeria growers. And the fact that I only have to apply it once a year is a big plus. So, I'm confident I will see good results from this product.

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