When Excellence is Your Standard

Excalibur Plumeria Fertilizer

Controlled-release nutrition built specifically for plumeria growers who want stronger roots, steady growth, and reliable bloom potential through the active growing season.

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Product selector

Choose by plant stage and season length

Excalibur is not a one-size-fits-all fertilizer line. Pick BOOST when the plant needs help getting established, VI for a six-month feeding window, or IX for a longer warm-season release.

Excalibur controlled release fertilizer granules Starter supportTransplants

Excalibur BOOST

Use BOOST when plumeria are rooting, recovering from stress, being repotted, grafted, or moved into a new growing phase.

Plumeria growing at Florida Colors Nursery 6-month releaseNPK 11-11-14

Excalibur VI

The core seasonal formula for growers who want a controlled release feed through a typical active growing season.

Pink plumeria blooms with green leaves 9-month releaseNPK 11-11-13

Excalibur IX

The longer-release option for warm climates, extended seasons, and growers who prefer fewer feeding events.

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Why Excalibur

Designed around how plumeria actually grow

Excalibur uses controlled-release nutrient technology to feed gradually when moisture and warm growing conditions are present. The line is built around plumeria culture, with micronutrients and boron included for balanced plant development.

  • Controlled release avoids the spike-and-crash pattern of quick liquid feeding.
  • Formulas are matched to real grower use cases: establishment, six-month feeding, and nine-month feeding.
  • Florida Colors Nursery uses plumeria-growing experience as the practical test bed.
Close-up of Excalibur fertilizer granules

Use with confidence

A simple feeding workflow

1. Feed active plants

Apply Excalibur when plumeria are awake, warm, and actively growing. Dormant plants cannot use fertilizer efficiently.

2. Match the formula

Use BOOST for establishment, VI for a shorter season, and IX where the warm season is longer.

3. Follow the label

Use the current product label and Florida Colors purchase page for bag sizes, rates, and availability.

For detailed timing, troubleshooting, and nutrient education, use the learning links below. They keep the product pages focused while giving serious growers room to go deeper.

Grower education

Learn more before you feed

Excalibur learning center

Follow a practical reading path for application, timing, formula choice, watering, and common fertilizer mistakes.

Open the learning center

Fertilizer and nutrition guide

Use PlumeriaCareGuide for broader fertilizer timing, nutrition, and troubleshooting topics.

Read the fertilizer guide

How to apply Excalibur

Learn when to feed, where to place the granules, how to water them in, and when to pause before fertilizing.

Read the application guide

How much to use

Estimate application amounts by pot size, trunk diameter, branch count, and overall tree size.

Read the amount guide

Excalibur FAQ

Get quick answers about formulas, rates, BOOST, timing, watering, and where to buy.

Read the FAQ

How Excalibur works

For a deeper look at ingredients, controlled release, and micronutrients, read the Excalibur breakdown.

Read the Excalibur breakdown

When to fertilize

PlumeriaWay offers lessons for growers who want a guided, phase-based approach to feeding decisions.

Open the lesson

Compare fertilizers

See how Excalibur compares with Osmocote, Nutricote, Nelson, liquid feeds, and bloom boosters.

View the comparison chart

Bloom buster fertilizers

Learn when high-phosphorus bloom boosters can help plumeria and when they can create imbalance.

Read the pros and cons

When to feed

Use plant readiness, season, root condition, and water behavior before deciding to fertilize.

Read when to feed

Purchase source

Buy from Florida Colors Nursery

All purchase buttons on this site go to the official Florida Colors Nursery Excalibur pages, where current prices, bag sizes, shipping details, reviews, and stock status are maintained.

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Florida Colors Nursery growing area