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Osmocote® Exact Standard 8-9M 15-9-11 + 2MgO +TE 25kg

Osmocote® Exact Standard

Osmocote® Exact Standard 8-9M 15-9-11 + 2MgO + TE 25 kg

SKU:
OSMO-8M/04
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Warning Information: Please Read

Professional Chemical

Safe Use of Pesticides

Please be aware that by proceeding you are purchasing a professional pesticide product. By law, everyone who uses a professional pesticide must be trained and certified in using and applying pesticides safely. You must ensure the end user of these products complies with the DEFRA/HSE Code for the Safe use of Pesticides. There are responsibilities in storage of the product.

Please ring 01904 608157 to speak to one of our BASIS qualified members of staff for advice on such qualifications.

Always read the label and use plant protection products safely

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£162.00 inc. VAT
£135.00 ex. VAT

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Product Details

Description

Osmocote® Exact Standard 8-9M gives season-long nutrient release, ensuring plants receive the nutrition they need. The blue colour-coded granules help distinguish between products with different release periods.

Osmocote Exact Standard releases nutrients consistently throughout the growing season. This regular, continuous release makes it suitable for a wide range of growing situations, including evergreens, deciduous shrubs and plants with consistent nutrient requirements throughout the growing cycle.

  • Controlled release: provides a continuous supply of nutrients throughout the stated release period.
  • Trace elements: includes essential trace elements to support plant growth.
  • Colour-coded granules: blue granules help identify the 8–9 month formulation and avoid mixing up release periods.
  • Consistent feeding: suited to crops requiring a steady supply of nutrients throughout the growing season.

Application Rates

Choose the application rate according to the crop's feeding requirements. Rates below are expressed as grams of fertiliser per litre of growing medium (g/L).

Plant type Light feeding Normal feeding Heavy feeding
Container nursery stock 3–4 g/L 4–5 g/L 5–6 g/L
Pot plants 3–4 g/L 4–5 g/L 5–6 g/L

Application Example

For a container holding 3 litres of growing medium, an application rate of 5 g/L requires:

3 × 5 = 15 g of fertiliser per container.

These are general recommendations based on unfertilised growing media. Adjust the feeding programme to suit the crop, growing conditions and season, including greenhouse or tunnel production and autumn or winter potting.

Trial on a small scale before changing the application rate, application method or growing programme. Follow the current manufacturer’s guidance and seek technical advice where needed.

How Temperature Affects Longevity

The stated 8–9 month release period is based on a growing-medium temperature of 21°C. Cooler conditions extend the release period, while warmer conditions shorten it.

Growing-medium temperature Approximate nutrient-release period
16°C 10–11 months
21°C 8–9 months
26°C 6–7 months

Consider growing-medium temperature when planning your feeding programme, particularly for crops grown under protection.

Storage

Store in dry conditions. Close partly used or damaged bags securely.

Need Help Choosing a Fertiliser?

Contact East Riding Horticulture & Turfcare on 01904 608157 or email sales@erh-ltd.co.uk for advice on choosing a fertiliser and feeding programme suited to your crops.

Reportable Substance

This product is a Reportable Substance under the Poisons Act 1972. You have specific obligations that must be adhered to:

  • Report any relevant transaction that it makes or proposes to make if the supplier has reasonable grounds for believing the transaction to be suspicious:
    • If it is a regulated or reportable explosives precursor - consider if it is intended for the illicit manufacture of explosives.
    • If it is a regulated or reportable poison - consider if it is intended for any illicit use.
  • Always take appropriate steps to assess if there are reasonable grounds for suspicion
  • Report all significant disappearance or thefts of regulated or reportable substances

Specifications

SKU
OSMO-8M/04
Brand
Osmocote® Exact Standard
Pack size
25 kg
NPK analysis
15-9-11
Magnesium Oxide
2% MgO
Trace elements
Included
Approximate longevity
8–9 months at 21°C
Advice & Guides

Frequently Asked Questions

Find answers to common questions. If you can't find what you're looking for, please get in touch with out team.

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Osmocote Exact Standard 8-9M supplies nutrients for approximately 8–9 months at a growing-medium temperature of 21°C. The “8-9M” refers to its nutrient-release period, not its shelf life. Temperature affects how quickly nutrients are released. In warmer greenhouse or polytunnel conditions, the feeding period may therefore be shorter.

These figures describe the fertiliser’s nutrient content:

  • 15: 15% nitrogen (N).
  • 9: 9% phosphate, expressed as P2O5.
  • 11: 11% potash, expressed as K2O.
  • 2MgO: 2% magnesium oxide.
  • TE: trace elements, which plants need in smaller quantities.

Together, they identify the formulation of Osmocote Exact Standard 8-9M and help you compare it with other fertilisers.

This controlled-release fertiliser is suitable for container nursery stock and pot plants, including evergreen and deciduous shrubs. It suits crops needing a steady nutrient supply over an extended growing cycle. Choose the application rate and longevity according to your crop’s requirements and growing conditions.

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