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Osmocote Pro 3-4 Month Controlled Slow Release High-Analysis Fertiliser

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  • High analysis controlled release fertiliser (Osmocote Pro 3 - 4 month) containing a complete range of essential nutrients. Suitable for most plants in pots including shrubs, flowers, ornamentals and trees.

    The Osmocote® Pro - Controlled Release Fertiliser Range, consists of a selection of professional grade fertilisers that contain industry leading concentrations of macronutrients (NPK), magnesium and a full suite of micronutrients (trace elements, TE's), all coated in a biodegradable resin with a pre-defined nutrient release profile.

    For fast growing plants, particularly in Spring, the 3-4m Osmocote® Pro option is generally advised, whereas during the rest of the year a slower release profile such as the 5-6m or the 8-9m Osmocote® Pro option might be more suitable. For particularly slow growing plants, such as most succulents, orchids, bonsai and particular exotics, the super long lasting 12-14m Osmocote® Pro is likely the best option. Please keep in mind, on a kilo-for-kilo basis, each of the Osmocote® Pro fertilisers contain a very similar nutritional composition, it is the nutrient release profile (duration) that varies.

    Unfortunately, many of the cheaper supermarket or even hardware store versions of slow-release fertilisers contain a generally less desirable NPK & TE ratio, in order to reduce product costs and focus on more immediate quick greening (mainly nitrogen) as opposed to sustained and longer term plant performance. The Osmocote® Pro - Controlled Release Fertiliser Range provides is a very high analysis fertiliser containing all the essential nutrients required for healthy plant growth and is suitable for most plant types including most lawns, flowers & ornamentals, trees including fruit trees, vegetable gardens as well as bonsai (at lower application rates). Osmocote® Pro is suitable for use in pots, planter bags, raised garden beds and wide range of landscape applications.

    The individual fertiliser granules are fully coated with a new generation matrix which provides constant and extended nutrient release (for 3 - 4 months) therefore helping growers avoid surges and leaching of important plant nutrients which belong in your pots or garden soil, not in our precious waterways.

    Osmocote® Pro is a professional grade product used widely by the nursery industry in Australia, particularly in the cultivation of perennial plants in pots and planter bags.

    What we love about Osmocote® Pro

    • High macronutrient (NPK) analysis
    • High micronutrient (Trace Element, TE) range
    • Sustained nutrient release profile (feeds plants for 3 - 4 months)
    • Nutrient release profile closely matches plant nutrient requirements
    • Nutrients maintained within the potting-mix
    • Suitable for a wide range of plants
    • Great value for money
    • Safe, reliable & easy to use

    Product Details & Specifications

    • Osmocote® Pro is packaged into resealable LDPE bags, plastic bottles or other suitable containers for ease of transport and use
    • The individual Osmocote® Pro granules measure 2-4mm, however, small variations from this do occur

    What am I Purchasing?

    • Osmocote® Pro (3 - 4 month release), of selected pack size

    Additional Information

    For additional information about the composition, application and limitation of Osmocote® Pro fertilisers, please visit the manufacturer's (Everris) website and search for Osmocote® Pro.

  • For indicative application rates, refer to the table below or the third image in the gallery.

    Garden Situation Application Rate
    Young plants including seedlings 2 - 3 grams per 1L of seed raising mix
    Pot plants 3 - 4 grams per 1L of potting mix
    Garden beds 10 - 30 grams per square metre of garden
    Native plants Use lower rates, generally half
  • For nutrient analysis as guaranteed by manufacturer, refer to the tables below or the third image in the gallery.


    6.6% nitrate nitrogen (NO3-N)
    9.0% ammoniacal nitrogen (NH4-N)
    1.4% urea nitrogen (Ur-N)
    8.3% water soluble
    10% water soluble


    0.33% Iron (Fe)
    0.06% EDTA chelated
    0.04% Manganese (Mn)
    0.037% Copper (Cu)
    0.02% Boron (B)
    0.015% Molybdenum (Mo)
    0.011% Zinc (Zn)

Customer Reviews

Based on 3 reviews
Lara S (VIC)

Great fertiliser that keeps the plant growing and doesn’t kill it! Will surely buy more in future. Also quick delivery by The Climbing Fig

Travis Bishop (VIC)
Grow Grow Grow..

This product is a must in any garden. It has made such a big difference in the look, strength and condition of my plants. Mix it into the potting mix or soil and all you have to do is water your plants and watch them grow. And I just reapply every 3-4 months and feeding my plants is done.
Give it a try. It's highly recommended. You'll be very satisfied with the results.

Kerry Thom (WA)

The fertilizer I purchased has a good balance of NPK. There are a number of identical products with varying release periods that gave me excellent options when choosing. I received it and previous orders promptly and have no reservations in ordering this or other products again from The Climbing Fig.
Kerry Thom
Western Australia