Osmocote – Range of controlled release encapsulated fertilizers

In professional nurseries and containerized ornamental crops, one of the biggest challenges is maintaining constant and balanced nutrition throughout the entire growing cycle without relying on continuous fertilization.

Traditional fertilizers release nutrients quickly, which can lead to leaching losses, dosage errors, and irregular plant growth.

The Osmocote range from ICL has been developed precisely to solve this problem. These are encapsulated controlled-release fertilizers, designed to provide nitrogen, phosphorus, potassium, and micronutrients gradually over several months.

Thanks to their resin coating technology, each granule acts as a small reservoir that releases nutrients according to the temperature and humidity of the substrate.

The result is a much more efficient fertilization system:

• stable nutrition
• uniform growth
• reduced nutrient loss
• fewer fertilizer applications

For this reason, Osmocote has become one of the most widely used fertilizers in professional nurseries worldwide.

Advantages of using Osmocote fertilizers in nurseries

Controlled-release fertilizers offer clear advantages over traditional fertilizers.

Key benefits include:

• Constant nutrition for months with a single application
• Reduced manual fertilization labor
• Less nutrient loss due to leaching
• More uniform plant growth
• Improved crop color and vigor
• Higher efficiency of applied fertilizer

In professional production, this translates into more homogeneous plants, lower operating costs, and greater commercial value at the point of sale.

Osmocote technology: controlled nutrient release

The secret to Osmocote's performance lies in its resin coating system.

Each granule contains a balanced mix of nutrients protected by a membrane that gradually regulates their release.

This allows that:

• when the temperature increases and the plant grows faster, nutrient release increases
• when growth slows down, release automatically decreases

This behavior makes Osmocote function as a smart nutrition system adapted to the plant's growth rate.

📊 General Advantages of Osmocote Technology

• Cost reduction: Minimizes labor by eliminating the need for recurrent fertilization.
• Maximum efficiency: The resin prevents nutrient washout, maximizing every gram of fertilizer.
• Homogeneous crops: Consistent release ensures identical batches of plants, ready for simultaneous sale.

🎯 Four Specific Solutions for Every Nursery Need

The Osmocote line includes fertilizers designed for different crop needs.

1. Osmocote Pro – Controlled-release fertilizer for nurseries

The Osmocote Pro range is one of the most widely used fertilizers in professional production.

It provides balanced nutrition with NPK, magnesium, and micronutrients, allowing the crop to remain nourished for months with a single application.

It is commonly used in:

• ornamental plant nurseries
• production of containerized shrubs and trees
• professional gardening and landscaping

Available in different durations (3-4, 5-6, and 12-14 months), it allows fertilization to be adapted to the crop cycle.

Main benefit:

✔ Stable nutrition throughout the entire growing cycle.

2. Osmocote Bloom – Fertilizer for seasonal plants

Osmocote Bloom 2-3 months is designed for short-cycle ornamental crops.

Its 12-7-18 + micronutrient formula promotes compact plants with abundant blooms and intense colors.

It is especially used in:

• production of seasonal plants
• short-cycle ornamental crops
• petunias, geraniums, begonias, or pansies

Main benefit:

✔ Intense blooms and balanced growth throughout the season.

3. Osmocote Topdress – Fertilizer for top-dressing in pots

Osmocote Topdress 5-6 months is designed to be applied directly to the surface of the substrate, without the need to mix it or transplant the plant.

Its 19-6-11 + MgO + Fe formula provides a very rapid visible effect:

• greening of leaves
• improved vigor
• restoration of the plant's commercial appearance

It is especially used in:

• nurseries and garden centers
• maintenance of plants in large pots
• correction of plants with lack of color

Main benefit:

✔ Restores the color and vigor of plants in a few days.

4. Osmocote CalMag – Fertilizer with calcium and magnesium

Osmocote CalMag 3-4 months provides calcium, magnesium, and nitrogen consistently during the early stages of cultivation.

It is especially suitable for technical or alternative substrates, where these nutrients may be scarce.

Common applications:

• coconut fiber crops
• substrates with bark or wood fiber
• systems with irrigation water poor in calcium

Main benefit:

✔ Prevents calcium and magnesium deficiencies in technical crops.

Common applications in nurseries and professional gardening

The Osmocote range is mainly used in:

• ornamental nurseries
• container plant production
• forestry crops
• professional gardening
• landscaping projects
• plant maintenance in garden centers

The most common application method is to mix the fertilizer with the substrate before transplanting, although some products like Topdress are designed for surface application.

Buy Osmocote fertilizers at GardenWeb

At GardenWeb, we offer professional fertilizers used in real nurseries.

The Osmocote range simplifies fertilization, improves crop uniformity, and ensures more vigorous plants throughout the season.

🛒 Make the switch to smart nutrition

Ensure the success of your campaign by reducing the risk of nutritional errors.

👉 [Select the type of Osmocote and longevity from the dropdown and add your 25 kg bag to the cart to ensure the best quality for your plants]