Excalibur is more than just a slow-release fertilizer. It’s a precisely formulated product. The nutrients are designed to meet the specific needs of plumeria. Excalibur has been developed through years of field testing. It is optimized for warm, humid climates. This makes it deliver consistent, dependable feeding in real-world plumeria growing conditions. Its unique blend, steady release profile, and top-quality ingredients set the standard for plumeria nutrition.

Engineered for Real Plumeria Conditions

Excalibur is unlike most slow-release fertilizers. It is rigorously field-tested at 85°F. This temperature is significantly higher than the standard 70°F used in most release trials. Why does this matter? Plumeria are heat-loving tropical plants that grow actively in summer conditions. A fertilizer tested under lower lab settings could overpromise its duration. Its effectiveness may not hold when exposed to Florida-style heat.

To simulate realistic usage, Excalibur is also tested under Florida seasonal rainfall patterns, which far exceed the national average. Plumeria grown in containers are typically watered even more frequently than the climate alone would require. Many slow-release fertilizers tend to degrade or flush out faster than advertised under heavy irrigation. Excalibur is designed to endure these conditions without prematurely depleting, making it more dependable in potted and frequently watered plumeria.

Osmotic Release for Unmatched Reliability

Excalibur uses a controlled-release system based on osmotic membrane technology. Excalibur’s release is not solely dependent on coating degradation. This degradation can be uneven or easily affected by temperature spikes and mechanical abrasion. Instead, a moisture gradient across a permeable membrane governs Excalibur’s release. This means nutrient delivery is consistent, predictable, and temperature-adaptive.

• No nutrient dump after heat waves
• Reduced risk of salt burn or overfeeding
• Even daily access to balanced N-P-K and micronutrients

This makes Excalibur particularly effective for container-grown plumeria. In containers, salt sensitivity and root-zone control are more critical than in open ground.

Premium Nutrient Profile with Chelated Micronutrients

Excalibur provides a balanced N-P-K formula in all three versions (IX, VI, and Boost). It includes a full profile of chelated micronutrients for enhanced uptake. These trace elements support flower color intensity, branch thickness, and root vitality. Chelation keeps these elements available longer and more efficiently in a range of pH conditions.

Nutrients include:

• Nitrogen (for leaf and stem development)
• Phosphorus (for roots and blooms)
• Potassium (for overall plant resilience)
• Chelated iron, manganese, zinc, copper, boron, and molybdenum

Clean, High-Purity Ingredients

Excalibur is formulated with low-dust, low-salt, high-purity ingredients. This ensures:

• Minimal salt buildup in containers
• Safer feeding for young roots and seedlings
• Consistent batch quality
• Greater solubility and even dispersion in the soil profile

Whereas many commercial fertilizers are blended from bulk, inconsistent materials, Excalibur maintains premium ingredient integrity in every bag.

Designed by Plumeria Growers, for Plumeria Growers

Excalibur wasn’t just adapted to plumeria—it was developed from the ground up by growers who understand their unique needs. It addresses:

• Plumeria’s sensitivity to salt and inconsistent feeding
• The long growing season in tropical and subtropical zones
• The tendency of potted plumeria to receive far more water than field-grown plants

Excalibur tailors release curves and nutrient ratios to these challenges. This approach reduces the guesswork. It minimizes the risk of under- or over-feeding.

Consistency in Every Season

Because of its precision testing and climate-adaptive release profile, Excalibur doesn’t fade early, even in:

• Summer heat waves
• High humidity
• Heavy irrigation cycles

Its true longevity under plumeria-specific conditions ensures its reliability. It surpasses fertilizers that perform well in lab trials but fail under real-world pressure.

Final Thoughts

Whether you’re growing one tree or a thousand, Excalibur offers a superior feeding experience for plumeria. It stands above conventional fertilizers. These products weren’t designed with plumeria in mind. It has osmotic-controlled release and chelated micronutrients. It also boasts heat-tested durability and premium ingredients.

If your goal is more blooms and healthier roots, Excalibur is the right fertilizer. It also helps you spend less time second-guessing your fertilization schedule. Excalibur consistently and completely meets the challenge.