10 Best Fertilizer For Crepe Myrtles 2025 in the United States

Miracle-Gro Water Soluble All Purpose Plant Food is a versatile fertilizer designed for a variety of plants, including flowers, vegetables, trees, shrubs, and houseplants. It aims to promote rapid growth and vibrant results. One of its significant strengths is the NPK ratio, which is well-balanced for general plant health but may not be specialized enough for specific needs like crepe myrtles.

This fertilizer is synthetic, meaning it provides quick results, but some gardeners might prefer organic options for a more natural approach. It contains essential micronutrients, which are beneficial for plant health. The application frequency is convenient, allowing for flexible use both indoors and outdoors with varying amounts depending on the plant type. It’s easy to apply using a watering can or the Miracle-Gro Garden Feeder, making it user-friendly even for those new to gardening.

However, the broad application might not meet the specific requirements of crepe myrtles as precisely as a specialized fertilizer would. Additionally, while the product supports substantial coverage, which is excellent for large gardens, it may be more than needed for smaller spaces. In conclusion, this product is effective for a wide range of plants but might not be the most targeted choice for crepe myrtles if you're looking for a fertilizer that caters specifically to their unique needs.

Osmocote Smart-Release Plant Food Plus is a versatile fertilizer ideal for both indoor and outdoor plants, which makes it suitable for a wide range of gardening needs, including crepe myrtles. The product has a balanced NPK ratio of 15-9-12, providing ample nitrogen, phosphorus, and potassium, essential for promoting healthy growth and vibrant blooms in crepe myrtles. This fertilizer is synthetic and comes in granule form, making it easy to apply either by mixing into the soil or sprinkling around the plants.

One of its main advantages is its long-lasting effect; a single application can feed plants for up to six months, reducing the need for frequent reapplication. This is particularly beneficial for those who prefer low-maintenance gardening. The inclusion of 11 essential nutrients and secondary nutrients ensures that plants receive a comprehensive diet, which can help in preventing nutrient deficiencies. The Osmocote package is also quite substantial, with 8 lbs (or approximately 8 liters) covering about 300 square feet, making it a cost-effective choice for larger garden areas.

However, it's important to note that this product is synthetic, which may not appeal to organic gardeners who prefer natural options. Additionally, while it is easy to apply, precise measurement is necessary to avoid over-fertilization, which can harm plants. For best results, it is recommended to follow the application instructions carefully, ensuring the granules are well-mixed into the top layer of soil and the area is watered regularly. In summary, Osmocote Smart-Release Plant Food Plus is a practical and efficient choice for fertilizing crepe myrtles, particularly for those looking for a long-term feeding solution.

Osmocote Smart-Release Plant Food Plus is a granular fertilizer designed to feed plants, including crepe myrtles, for up to six months with a steady supply of nutrients. It contains 11 essential nutrients, which is beneficial since crepe myrtles need a balanced mix of nitrogen, phosphorus, and potassium (NPK) along with micronutrients for healthy growth and vibrant blooms. The product’s unique resin coating controls nutrient release based on temperature, helping prevent over-fertilizing and the risk of burning plants.

This slow-release feature means fewer applications are needed—typically just twice a year—which is convenient for busy gardeners. The fertilizer is synthetic but offers a no-burn guarantee when used as directed, making it safer for your plants compared to some quick-release options. It covers a good area (up to 300 sq. ft. per 8-pound container), which is suitable for multiple crepe myrtles or other garden plants.

If you want a reliable, low-maintenance fertilizer that feeds over time and supports healthy plant growth without frequent applications, Osmocote Smart-Release is a solid choice for crepe myrtles and other outdoor plants.