10 Best Plumeria Fertilizer 2025 in the United States

The Miracle-Gro Water Soluble All Purpose Plant Food is a versatile and effective fertilizer that can be used for a wide range of plants, including indoor and outdoor varieties. One of its main strengths is its quick action, promoting noticeable growth and more beautiful plants almost immediately. It also covers a significant area, with a 10 lb. container feeding approximately 4,000 sq. ft. This makes it a cost-effective option for larger gardens or multiple plants.

The fertilizer can be applied using a watering can or the Miracle-Gro Garden Feeder, allowing flexibility in application methods. However, it's worth noting that the product is synthetic, which might be a downside for those looking for organic options. While it's designed for general use and has a broad appeal, it may not have the specific micronutrient formulation required for more specialized plants like plumeria.

Its N-P-K ratio isn't specified in the brief, so it may be worth checking if it meets the specific needs of your plants. For those who prefer organic fertilizers or need a product specifically tailored for plumerias, this might not be the perfect fit.

Osmocote Smart-Release Plant Food Flower & Vegetable is a slow-release granular fertilizer with a balanced NPK ratio of 14-14-14, making it suitable for various plants, including vegetables and perennials. Its main strength lies in its high total nutrient formula, which supports strong root development and vigorous above-ground growth. The slow-release mechanism, controlled by soil temperature, ensures a steady nutrient supply, reducing the risk of over-fertilization.

Additionally, the product's design makes it nearly mistake-proof, as it does not burn plants even if over-applied up to three times the recommended rate. This feature is particularly beneficial for novice gardeners or those concerned about accurate dosing. The inclusion of an applicator and clear usage instructions further enhances its user-friendliness.

However, a notable drawback for plumeria growers is the lack of specific micronutrients that can be crucial for optimal plumeria care. Although it performs well in a variety of soil and climate conditions, it may not address the unique needs of plumeria plants as effectively as a fertilizer specifically formulated for them. In summary, while Osmocote Smart-Release Plant Food is a reliable and user-friendly option for general gardening needs, plumeria enthusiasts might need to supplement it with additional micronutrients for the best results.

The Nelson Plumeria and All Flowering Tropicals Food is a granular fertilizer, tailored for a variety of tropical and flowering plants including plumeria. The N-P-K ratio of 5-30-5 indicates a high phosphorus content, which is excellent for promoting blooms, but relatively lower nitrogen and potassium levels. This makes it great for flowering but not necessarily for vegetative growth.

It contains multiple nitrogen sources ensuring consistent feeding, and added sulfur helps to increase soil acidity which can be beneficial for some plants. It includes specific micronutrients that help enhance the color and health of blooms. This fertilizer is suitable for in-ground, container, and patio grown plants, providing versatility in application.

It promises immediate results upon application, providing plants with a quick boost and sustained nutrition over time. The product is synthetic and its granular form makes it easy to apply but might require careful measurement to avoid overuse. It is highly regarded by landscapers, indicating its effectiveness and quality, backed by over 30 years of usage in the industry.