Osmocote Plus 15-9-12 8-9M Lo-Start 50Lb (40/PL) (PL Min)

Osmocote Plus 15-9-12 8-9M Lo-Start is a controlled-release fertilizer designed specifically for propagation, perennial planting, and nursery stock management. Created with a low initial nutrient release, this specialized formula ensures consistent and balanced nutrient availability, making it ideal for late-season plantings that need to be overwintered.

The Lo-Start formulation prevents excessive salt buildup during storage and rooting, making it a reliable choice for professional growers, nurseries, and horticulturists looking to support plant establishment without the risk of fertilizer burn. With a release duration of 8-9 months, this product provides long-term feeding, ensuring healthy plant growth from propagation through maturity.

Why Choose Osmocote Plus 15-9-12 8-9M Lo-Start?

This Osmocote Plus formulation is specifically designed for controlled, sustained nutrient release, making it an excellent option for:

• Propagation and early-stage plant development
• Perennial planting and late-season transplanting
• Nursery stock preparation for overwintering
• Plants requiring a low initial nutrient release to prevent salt stress

Its unique polymer-coated granules release nutrients gradually and efficiently, optimizing plant health while reducing the risk of over-fertilization.

Key Features and Benefits

Osmocote Plus 15-9-12 8-9M Lo-Start is a top controlled-release fertilizer designed to provide consistent, long-term nutrition for a wide range of plants. With a balanced NPK ratio and innovative Lo-Start technology, it ensures steady growth while minimizing the risk of nutrient overload. This specialized formulation is ideal for both professionals and home gardeners looking to support healthy root development, strong vegetative growth, and improved plant resilience.

1. Balanced 15-9-12 NPK Ratio for Healthy Growth

Osmocote Plus 15-9-12 provides an optimal nutrient balance for various plants, ensuring healthy root development, strong vegetative growth, and improved resilience.

• 15% Nitrogen (N) – Supports lush foliage growth and promotes vigorous plant development.
• 9% Phosphorus (P) – Encourages robust root systems and aids in early plant establishment.
• 12% Potassium (K) – Improves disease resistance, water regulation, and overall plant strength.

This controlled NPK release delivers nutrients exactly when plants need them, supporting consistent growth without excessive bursts that can lead to stress or poor establishment.

2. Lo-Start Technology – Low Initial Release for Safe Rooting

One of the standout features of Osmocote Plus 15-9-12 8-9M Lo-Start is its low initial nutrient release, making it ideal for sensitive plants and newly rooted cuttings.

• Prevents salt buildup, which can inhibit root development and cause transplant shock.
• Encourages steady, even feeding, rather than an aggressive nutrient spike.
• Perfect for overwintering nursery stock, ensuring plants receive nutrients at the right time without overloading their systems.

This makes Lo-Start an excellent choice for professionals who need precise control over nutrient availability during early growth stages.

3. 8-9 Month Controlled Release for Long-Term Feeding

Osmocote Plus 15-9-12 8-9M Lo-Start provides sustained nutrient release for up to 9 months, significantly reducing the need for frequent fertilizer applications.

• Ensures consistent nutrition throughout the growing season.
• Minimizes labor costs associated with repeated fertilization.
• Supports overwintered plants, delivering nutrients at the optimal rate for steady growth.

This controlled-release technology helps growers achieve predictable results with less risk of over- or under-fertilization.

4. Ideal for Perennials, Nursery Stock, and Late-Season Planting

Osmocote Plus 15-9-12 8-9M Lo-Start is commonly used in:

• Perennial plant propagation – Ensures steady, sustained growth for long-living plants.
• Late-season plantings – Prepares nursery stock for overwintering with a gentle nutrient release.
• Container-grown nursery stock – Provides controlled fertilization without salt buildup.
• Field-grown ornamentals and landscaping plants – Supports vigorous, stress-free establishment.

5. Reduces Salt Buildup and Promotes Healthy Root Development

Excessive fertilizer salts can damage young plants, leading to burned roots, stunted growth, and poor transplant survival. Osmocote Plus 15-9-12 8-9M Lo-Start is designed to:

• Prevent excessive salt accumulation in soil and growing media.
• Allow plants to absorb nutrients efficiently without stress.
• Support strong root systems by delivering nutrients in a slow, measured manner.

This is especially important for newly propagated plants, which are vulnerable to nutrient imbalances and high-salt environments.

How to Use Osmocote Plus 15-9-12

Applying Osmocote Plus 15-9-12 8-9M Lo-Start is easy, ensuring plants receive a steady supply of nutrients over time. Its controlled-release formula allows for precise application, reducing the risk of over-fertilization while promoting healthy, sustained growth. By following the recommended dosage and distribution methods, gardeners can maximize plant performance with minimal effort.

Application Rates

For best results, apply Osmocote Plus 15-9-12 8-9M Lo-Start based on plant type and growing conditions.

• Propagation Trays & Seedlings – Apply 3-5 lbs per cubic yard of growing media.
• Nursery Containers (1-5 gallon pots) – Apply ½ to 1 teaspoon per container.
• Field-Grown Perennials & Ornamental Plants – Apply 1 to 2 lbs per 100 square feet.
• Overwintered Nursery Stock – Apply lightly in fall, ensuring gradual uptake throughout winter and early spring.

Application Methods

• Top-Dressing – Apply fertilizer evenly around plants, ensuring light incorporation into the soil.
• Incorporation into Growing Media – Mix into soil before planting for even nutrient distribution.
• Side-Dressing for Established Plants – Apply around the base of plants to supplement seasonal growth.

This versatile application method allows for precise control over nutrient delivery, adapting to different plant needs and growing conditions.

Why Growers Trust Osmocote Lo-Start

There are certain reasons why growers trust Osmocote Plus 15-9-12 8-9M Lo-Start:

• Scientifically formulated controlled-release fertilizer
• Lo-Start technology prevents salt buildup and root damage
• Optimized 15-9-12 NPK ratio for balanced nutrition
• Sustained feeding for 8-9 months, reducing labor and maintenance
• Ideal for propagation, perennials, and late-season plantings
• Trusted by professional growers, nurseries, and landscapers