What is this fertiliser used for?
It is designed for topdressing established container nursery stock.
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Controlled Release Fertiliser
7 products
7 products
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ICL Osmocote Topdress Pro Fusion Technology - 25kg
12473
£124.73
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ICL Osmocote Topdress Pro Fusion Technology - 25kg
12473
£124.73
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ICL Osmocote Topdress Pro Fusion Technology - 25kg is a professional Osmocote Topdress FT controlled-release fertiliser formulated for topdressing established container nursery stock.
Its resin-coated nutrients provide a measured supply over a nominal 4–5-month period at 21°C, helping growers match fertiliser longevity to their crop cycle.
Key benefits
- Fusion Technology for adherence to growing-medium surface
- Designed for established container nursery stock
- 22-5-6 + 2MgO and trace elements
- 4–5-month nominal longevity at 21°C
- 25 kg bag
Professional applications
Suitable for topdressing established container nursery stock. Plan nutrition around crop demand, irrigation water, substrate properties and any supplementary feeding.
How to apply
Apply evenly to the growing-medium surface according to ICL’s current topdress instructions and crop requirements. Fusion Technology helps the fertiliser adhere to the substrate surface, reducing granule loss when containers are moved or tipped.
Application rates & nutrient management
Use the current ICL topdress dosage guidance for the crop and container size; a universal application rate is not appropriate.
Manufacturer rates are general recommendations for unfertilised substrates. Adjust to local growing conditions and other nutrient inputs. Trial programme changes on a small scale before wider adoption.
Storage & handling
Keep partly used bags sealed and store in dry conditions. Follow current ICL product information and safety guidance.
Technical specifications
| Manufacturer | ICL Growing Solutions |
|---|---|
| Range | Osmocote Topdress FT controlled-release fertiliser |
| NPK (oxide basis) | 22-5-6 |
| Magnesium | 2% MgO |
| Trace elements | Included |
| Nominal longevity | 4–5 months at 21°C |
| Pack size | 25 kg |
| Typical application | topdressing established container nursery stock |
Frequently asked questions
What does the stated longevity mean?
ICL rates this product at 4–5 months at a growing-medium temperature of 21°C. Higher temperatures generally shorten the release period; lower temperatures extend it. Can it be combined with liquid feeding?
Yes, where the crop programme calls for it. Reduce the controlled-release fertiliser rate appropriately when adding water-soluble nutrients to avoid excessive total feeding. How should unused product be stored?
Reseal opened bags and store in dry conditions, following the manufacturer’s storage instructions. How do I select a rate?
Choose a rate according to crop demand, growing medium, container volume, season and any additional feeding. The published rates are general starting points for unfertilised substrates; trial changes on a small scale. What is Fusion Technology?
It is designed to help fertiliser granules adhere to the surface of the growing medium after topdressing. Is this a substitute for incorporating fertiliser at potting?
It is particularly useful for topdressing established containers; choose a nutrition programme based on the crop’s current and future needs.
ICL Osmocote Pro 8-9 Months 18-9-10 2MgO+TE 25kg
13980
£139.80
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ICL Osmocote Pro 8-9 Months 18-9-10 2MgO+TE 25kg
13980
£139.80
Unit price per
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ICL Osmocote Pro 8-9 Months 18-9-10 2MgO+TE 25kg is a professional Osmocote Pro controlled-release fertiliser formulated for incorporation into growing media for container nursery stock.
Its resin-coated nutrients provide a measured supply over a nominal 8–9-month period at 21°C, helping growers match fertiliser longevity to their crop cycle.
Key benefits
- Fully coated NPK, magnesium and trace elements
- Predictable release for container crops
- Useful in nursery nutrition programmes alongside appropriately adjusted water-soluble feeding
- 8–9-month nominal longevity at 21°C
- 25 kg bag
Professional applications
Suitable for incorporation into growing media for container nursery stock. Plan nutrition around crop demand, irrigation water, substrate properties and any supplementary feeding.
How to apply
Mix granules evenly through the growing medium before potting, following the current manufacturer instructions. ICL advises against dibbling for the short-duration Pro variants; check the current instructions for the exact product before choosing any alternative application method.
Application rates & nutrient management
Container nursery stock: 3–3.5 g/L (light), 3.5–4.5 g/L (normal), 4.5–5.5 g/L (heavy).
Manufacturer rates are general recommendations for unfertilised substrates. Adjust to local growing conditions and other nutrient inputs. Trial programme changes on a small scale before wider adoption.
Storage & handling
Keep partly used bags sealed and store in dry conditions. Follow current ICL product information and safety guidance.
Technical specifications
| Manufacturer | ICL Growing Solutions |
|---|---|
| Range | Osmocote Pro controlled-release fertiliser |
| NPK (oxide basis) | 18-9-10 |
| Magnesium | 2% MgO |
| Trace elements | Included |
| Nominal longevity | 8–9 months at 21°C |
| Pack size | 25 kg |
| Typical application | incorporation into growing media for container nursery stock |
| Manufacturer guidance | Container nursery stock: 3–3.5 g/L (light), 3.5–4.5 g/L (normal), 4.5–5.5 g/L (heavy). |
Frequently asked questions
What is this fertiliser used for?
It is designed for incorporation into growing media for container nursery stock. What does the stated longevity mean?
ICL rates this product at 8–9 months at a growing-medium temperature of 21°C. Higher temperatures generally shorten the release period; lower temperatures extend it. Can it be combined with liquid feeding?
Yes, where the crop programme calls for it. Reduce the controlled-release fertiliser rate appropriately when adding water-soluble nutrients to avoid excessive total feeding. How should unused product be stored?
Reseal opened bags and store in dry conditions, following the manufacturer’s storage instructions. How do I select a rate?
Choose a rate according to crop demand, growing medium, container volume, season and any additional feeding. The published rates are general starting points for unfertilised substrates; trial changes on a small scale. Is this suitable for every crop?
No. Match the formulation and longevity to the crop, growing period and feeding requirements. How does temperature affect nutrient release?
Nutrient release generally speeds up at higher growing-medium temperatures and slows at lower temperatures.
ICL Osmocote Pro 12-14 Months 18-9-10 2MgO+TE 25kg
14476
£144.76
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ICL Osmocote Pro 12-14 Months 18-9-10 2MgO+TE 25kg
14476
£144.76
Unit price per
Please sign in to see pricing
ICL Osmocote Pro 12-14 Months 18-9-10 2MgO+TE 25kg is a professional Osmocote Pro controlled-release fertiliser formulated for incorporation into growing media for container nursery stock.
Its resin-coated nutrients provide a measured supply over a nominal 12–14-month period at 21°C, helping growers match fertiliser longevity to their crop cycle.
Key benefits
- Fully coated NPK, magnesium and trace elements
- Predictable release for container crops
- Useful in nursery nutrition programmes alongside appropriately adjusted water-soluble feeding
- 12–14-month nominal longevity at 21°C
- 25 kg bag
Professional applications
Suitable for incorporation into growing media for container nursery stock. Plan nutrition around crop demand, irrigation water, substrate properties and any supplementary feeding.
How to apply
Mix granules evenly through the growing medium before potting, following the current manufacturer instructions. ICL advises against dibbling for the short-duration Pro variants; check the current instructions for the exact product before choosing any alternative application method.
Application rates & nutrient management
Container nursery stock: 3–4 g/L (light), 4–5 g/L (normal), 5–6 g/L (heavy).
Manufacturer rates are general recommendations for unfertilised substrates. Adjust to local growing conditions and other nutrient inputs. Trial programme changes on a small scale before wider adoption.
Storage & handling
Keep partly used bags sealed and store in dry conditions. Follow current ICL product information and safety guidance.
Technical specifications
| Manufacturer | ICL Growing Solutions |
|---|---|
| Range | Osmocote Pro controlled-release fertiliser |
| NPK (oxide basis) | 18-9-10 |
| Magnesium | 2% MgO |
| Trace elements | Included |
| Nominal longevity | 12–14 months at 21°C |
| Pack size | 25 kg |
| Typical application | incorporation into growing media for container nursery stock |
| Manufacturer guidance | Container nursery stock: 3–4 g/L (light), 4–5 g/L (normal), 5–6 g/L (heavy). |
Frequently asked questions
What is this fertiliser used for?
It is designed for incorporation into growing media for container nursery stock. What does the stated longevity mean?
ICL rates this product at 12–14 months at a growing-medium temperature of 21°C. Higher temperatures generally shorten the release period; lower temperatures extend it. Can it be combined with liquid feeding?
Yes, where the crop programme calls for it. Reduce the controlled-release fertiliser rate appropriately when adding water-soluble nutrients to avoid excessive total feeding. How should unused product be stored?
Reseal opened bags and store in dry conditions, following the manufacturer’s storage instructions. How do I select a rate?
Choose a rate according to crop demand, growing medium, container volume, season and any additional feeding. The published rates are general starting points for unfertilised substrates; trial changes on a small scale. Is this suitable for every crop?
No. Match the formulation and longevity to the crop, growing period and feeding requirements. How does temperature affect nutrient release?
Nutrient release generally speeds up at higher growing-medium temperatures and slows at lower temperatures.
ICL Osmocote Pro 5–6M 19-9-10 + 2MgO + TE - 25kg
13636
£136.36
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ICL Osmocote Pro 5–6M 19-9-10 + 2MgO + TE - 25kg
13636
£136.36
Unit price per
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ICL Osmocote Pro 5–6M is a professional controlled-release fertiliser with an NPK analysis of 19-9-10, 2% MgO and trace elements, supplied in a 25kg bag.
Its fully coated nutrient granules are designed to provide sustained nutrition over a predefined 5–6 months longevity period, making this version suited to professional container production where the crop cycle matches the stated release period.
Key benefits
- Controlled-release longevity: 5–6 months
- NPK analysis: 19-9-10
- Magnesium: 2% MgO
- Includes trace elements
- Fully coated controlled-release fertiliser
- Professional 25kg bag
Verified nutrient analysis
The current ICL product information states 19% total nitrogen, 9% P₂O₅, 10% K₂O and 2% MgO, together with trace elements. This page uses the current 19-9-10 analysis rather than relying on older or market-specific product information.
For medium-duration container production
ICL specifies a 5–6 month longevity for this Osmocote Pro formulation. This makes it suitable for professional container crops where sustained nutrition is required across a medium-duration production cycle, subject to crop requirements and growing conditions.
Using controlled-release fertiliser
Choose the product longevity and application rate according to crop species, container size, production period, growing-medium fertility, irrigation regime and supplementary feeding programme. Controlled-release fertiliser should be distributed consistently through or applied to the growing medium using a method appropriate to the crop and production system.
Avoid damaging coated granules during mechanical handling or application, as damage to the coating can alter nutrient release.
Temperature & nutrient release
Controlled-release fertiliser performance is influenced by growing conditions, particularly temperature. Crop nutrient demand also changes with growth rate, irrigation and season, so monitor crop response rather than assuming the stated longevity alone guarantees the correct nutrition programme.
Integrating with irrigation & water-soluble feeding
Account for nutrients already supplied by irrigation water, growing media and any supplementary fertiliser. Where water-soluble feeds are also used, adjust the overall programme to avoid unnecessary nutrient loading.
Storage & handling
Store fertiliser dry and protected from contamination and physical damage. Follow the current ICL product information and safety data sheet for handling, application and storage requirements.
ICL Osmocote Pro 5–6M 19-9-10 + 2MgO + TE - 25kg product details
| Brand | ICL |
|---|---|
| Range | Osmocote Pro |
| Product type | Controlled-release fertiliser |
| Longevity | 5–6 months |
| NPK | 19-9-10 |
| Magnesium | 2% MgO |
| Trace elements | Yes |
| Pack size | 25kg |
ICL Osmocote Pro 5–6M 19-9-10 + 2MgO + TE - 25kg FAQs
What is the stated longevity?
This version has a stated controlled-release longevity of 5–6 months. What is the NPK analysis?
The current ICL product information states 19-9-10. Does it contain magnesium?
Yes. The stated analysis includes 2% MgO. Does Osmocote Pro contain trace elements?
Yes. This formulation includes trace elements. Is the 25kg bag the selling unit?
Yes. This product is supplied as one 25kg bag. How do I choose an application rate?
Base the rate on the crop, container, growing medium, production period and wider feeding programme, following current ICL guidance. Does temperature affect nutrient release?
Yes. Controlled-release fertiliser performance is influenced by growing conditions, including temperature. Can it be used alongside water-soluble fertiliser?
It can form part of a wider nutrition programme, but account for all nutrient sources and avoid unnecessary overfeeding. Can coated granules be damaged?
Yes. Avoid crushing or damaging the coating during handling or application because this can affect nutrient release. Where should I check current technical guidance?
Use the current ICL product information and safety data sheet for the exact product and intended crop.
ICL Osmocote Pro 3–4M 19-9-10 + 2MgO + TE - 25kg
13206
£132.06
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ICL Osmocote Pro 3–4M 19-9-10 + 2MgO + TE - 25kg
13206
£132.06
Unit price per
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ICL Osmocote Pro 3–4M is a professional controlled-release fertiliser with an NPK analysis of 19-9-10, 2% MgO and trace elements, supplied in a 25kg bag.
Its fully coated nutrient granules are designed to provide sustained nutrition over a predefined 3–4 months longevity period, making this version suited to professional container production where the crop cycle matches the stated release period.
Key benefits
- Controlled-release longevity: 3–4 months
- NPK analysis: 19-9-10
- Magnesium: 2% MgO
- Includes trace elements
- Fully coated controlled-release fertiliser
- Professional 25kg bag
Verified nutrient analysis
The current ICL product information states 19% total nitrogen, 9% P₂O₅, 10% K₂O and 2% MgO, together with trace elements. This page uses the current 19-9-10 analysis rather than relying on older or market-specific product information.
For shorter crop cycles
ICL describes Osmocote Pro 3–4M as a controlled-release fertiliser for short crop cycles and rapidly growing plant material. Its 3–4 month longevity can make it appropriate where the production period is relatively short and a longer-duration fertiliser would extend beyond the intended crop cycle.
Using controlled-release fertiliser
Choose the product longevity and application rate according to crop species, container size, production period, growing-medium fertility, irrigation regime and supplementary feeding programme. Controlled-release fertiliser should be distributed consistently through or applied to the growing medium using a method appropriate to the crop and production system.
Avoid damaging coated granules during mechanical handling or application, as damage to the coating can alter nutrient release.
Temperature & nutrient release
Controlled-release fertiliser performance is influenced by growing conditions, particularly temperature. Crop nutrient demand also changes with growth rate, irrigation and season, so monitor crop response rather than assuming the stated longevity alone guarantees the correct nutrition programme.
Integrating with irrigation & water-soluble feeding
Account for nutrients already supplied by irrigation water, growing media and any supplementary fertiliser. Where water-soluble feeds are also used, adjust the overall programme to avoid unnecessary nutrient loading.
Storage & handling
Store fertiliser dry and protected from contamination and physical damage. Follow the current ICL product information and safety data sheet for handling, application and storage requirements.
ICL Osmocote Pro 3–4M 19-9-10 + 2MgO + TE - 25kg product details
| Brand | ICL |
|---|---|
| Range | Osmocote Pro |
| Product type | Controlled-release fertiliser |
| Longevity | 3–4 months |
| NPK | 19-9-10 |
| Magnesium | 2% MgO |
| Trace elements | Yes |
| Pack size | 25kg |
ICL Osmocote Pro 3–4M 19-9-10 + 2MgO + TE - 25kg FAQs
What is the stated longevity?
This version has a stated controlled-release longevity of 3–4 months. What is the NPK analysis?
The current ICL product information states 19-9-10. Does it contain magnesium?
Yes. The stated analysis includes 2% MgO. Does Osmocote Pro contain trace elements?
Yes. This formulation includes trace elements. Is the 25kg bag the selling unit?
Yes. This product is supplied as one 25kg bag. How do I choose an application rate?
Base the rate on the crop, container, growing medium, production period and wider feeding programme, following current ICL guidance. Does temperature affect nutrient release?
Yes. Controlled-release fertiliser performance is influenced by growing conditions, including temperature. Can it be used alongside water-soluble fertiliser?
It can form part of a wider nutrition programme, but account for all nutrient sources and avoid unnecessary overfeeding. Can coated granules be damaged?
Yes. Avoid crushing or damaging the coating during handling or application because this can affect nutrient release. Where should I check current technical guidance?
Use the current ICL product information and safety data sheet for the exact product and intended crop.
ICL Osmocote Exact Tablet 5-6 Months 14-8-11 2MgO+TE 5.0g 7.5kg
12669
£126.69
Unit price per
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ICL Osmocote Exact Tablet 5-6 Months 14-8-11 2MgO+TE 5.0g 7.5kg
12669
£126.69
Unit price per
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ICL Osmocote Exact Tablet 5-6 Months 14-8-11 2MgO+TE 5.0g 7.5kg is a professional Osmocote Exact controlled-release fertiliser tablet formulated for precise nutrition dosing of individual pots, containers and hanging baskets.
Its resin-coated nutrients provide a measured supply over a nominal 5–6-month period at 21°C, helping growers match fertiliser longevity to their crop cycle.
Key benefits
- 5 g tablet for consistent per-container dosing
- Cone-shaped tablet is easy to insert
- 14-8-11 + 2MgO and trace elements
- 5–6-month nominal longevity at 21°C
- 7.5 kg pack of 5 g tablets
Professional applications
Suitable for precise nutrition dosing of individual pots, containers and hanging baskets. Plan nutrition around crop demand, irrigation water, substrate properties and any supplementary feeding.
How to apply
Push tablets fully into the growing medium. In hanging baskets, position tablets around the plant; under drip irrigation, ICL recommends positioning beneath the dripper. The water-soluble adhesive breaks down after watering.
Application rates & nutrient management
Container nursery stock and pot plants: 3–4 g/L; hanging baskets: 3–5 g/L (manufacturer guidance for unfertilised substrates).
Manufacturer rates are general recommendations for unfertilised substrates. Adjust to local growing conditions and other nutrient inputs. Trial programme changes on a small scale before wider adoption.
Storage & handling
Keep partly used bags sealed and store in dry conditions. Follow current ICL product information and safety guidance.
Technical specifications
| Manufacturer | ICL Growing Solutions |
|---|---|
| Range | Osmocote Exact controlled-release fertiliser tablet |
| NPK (oxide basis) | 14-8-11 |
| Magnesium | 2% MgO |
| Trace elements | Included |
| Nominal longevity | 5–6 months at 21°C |
| Pack size | 7.5 kg |
| Tablet size | 5 g |
| Typical application | precise nutrition dosing of individual pots, containers and hanging baskets |
| Manufacturer guidance | Container nursery stock and pot plants: 3–4 g/L; hanging baskets: 3–5 g/L (manufacturer guidance for unfertilised substrates). |
Frequently asked questions
What is this fertiliser used for?
It is designed for precise nutrition dosing of individual pots, containers and hanging baskets. What does the stated longevity mean?
ICL rates this product at 5–6 months at a growing-medium temperature of 21°C. Higher temperatures generally shorten the release period; lower temperatures extend it. Can it be combined with liquid feeding?
Yes, where the crop programme calls for it. Reduce the controlled-release fertiliser rate appropriately when adding water-soluble nutrients to avoid excessive total feeding. How should unused product be stored?
Reseal opened bags and store in dry conditions, following the manufacturer’s storage instructions. How do I select a rate?
Choose a rate according to crop demand, growing medium, container volume, season and any additional feeding. The published rates are general starting points for unfertilised substrates; trial changes on a small scale. How are the tablets applied?
Push the tablets fully into the growing medium. For drip-irrigated pots, position beneath the dripper. How many tablets should be used per pot?
Calculate the total grams required for the pot volume and crop, then select a whole number of 5 g tablets that matches the feeding plan. ICL provides a 3 L pot example using three 5 g tablets for a 15 g total.
ICL Osmocote Exact Tablet 8-9 Months 14-8-11 2MgO+TE 5.0g 7.5kg
12905
£129.05
Unit price per
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ICL Osmocote Exact Tablet 8-9 Months 14-8-11 2MgO+TE 5.0g 7.5kg
12905
£129.05
Unit price per
Please sign in to see pricing
ICL Osmocote Exact Tablet 8-9 Months 14-8-11 2MgO+TE 5.0g 7.5kg is a professional Osmocote Exact controlled-release fertiliser tablet formulated for precise nutrition dosing of individual pots, containers and hanging baskets.
Its resin-coated nutrients provide a measured supply over a nominal 8–9-month period at 21°C, helping growers match fertiliser longevity to their crop cycle.
Key benefits
- 5 g tablet for consistent per-container dosing
- Cone-shaped tablet is easy to insert
- 14-8-11 + 2MgO and trace elements
- 8–9-month nominal longevity at 21°C
- 7.5 kg pack of 5 g tablets
Professional applications
Suitable for precise nutrition dosing of individual pots, containers and hanging baskets. Plan nutrition around crop demand, irrigation water, substrate properties and any supplementary feeding.
How to apply
Push tablets fully into the growing medium. In hanging baskets, position tablets around the plant; under drip irrigation, ICL recommends positioning beneath the dripper. The water-soluble adhesive breaks down after watering.
Application rates & nutrient management
Container nursery stock and pot plants: 4–5 g/L; hanging baskets: 4–6 g/L (manufacturer guidance for unfertilised substrates).
Manufacturer rates are general recommendations for unfertilised substrates. Adjust to local growing conditions and other nutrient inputs. Trial programme changes on a small scale before wider adoption.
Storage & handling
Keep partly used bags sealed and store in dry conditions. Follow current ICL product information and safety guidance.
Technical specifications
| Manufacturer | ICL Growing Solutions |
|---|---|
| Range | Osmocote Exact controlled-release fertiliser tablet |
| NPK (oxide basis) | 14-8-11 |
| Magnesium | 2% MgO |
| Trace elements | Included |
| Nominal longevity | 8–9 months at 21°C |
| Pack size | 7.5 kg |
| Tablet size | 5 g |
| Typical application | precise nutrition dosing of individual pots, containers and hanging baskets |
| Manufacturer guidance | Container nursery stock and pot plants: 4–5 g/L; hanging baskets: 4–6 g/L (manufacturer guidance for unfertilised substrates). |
Frequently asked questions
What is this fertiliser used for?
It is designed for precise nutrition dosing of individual pots, containers and hanging baskets. What does the stated longevity mean?
ICL rates this product at 8–9 months at a growing-medium temperature of 21°C. Higher temperatures generally shorten the release period; lower temperatures extend it. Can it be combined with liquid feeding?
Yes, where the crop programme calls for it. Reduce the controlled-release fertiliser rate appropriately when adding water-soluble nutrients to avoid excessive total feeding. How should unused product be stored?
Reseal opened bags and store in dry conditions, following the manufacturer’s storage instructions. How do I select a rate?
Choose a rate according to crop demand, growing medium, container volume, season and any additional feeding. The published rates are general starting points for unfertilised substrates; trial changes on a small scale. How are the tablets applied?
Push the tablets fully into the growing medium. For drip-irrigated pots, position beneath the dripper. How many tablets should be used per pot?
Calculate the total grams required for the pot volume and crop, then select a whole number of 5 g tablets that matches the feeding plan. ICL provides a 3 L pot example using three 5 g tablets for a 15 g total.
The Controlled Release Fertiliser collection provides long-term nutrient delivery solutions designed to feed plants gradually over extended periods. These Osmocote products reduce labour input while ensuring consistent nutrition throughout the growing cycle.
Supplied through horticultural distributors, controlled release fertilisers are widely used in nurseries and landscaping projects where predictable performance and reduced maintenance are essential. This range supports efficient, professional plant production.