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Item: 5538-WG


4.6/5 from 345 reviews

Fertiliser Spray Mixer

Fertiliser Spray Mixer

Variable spray mixer for fertiliser, weed & soap sprays Next shipment due mid December. No Pre orders!

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Connect the Fertiliser Spray Mixer to your hose and quickly and conveniently dispense commercial fertiliser onto your lawn or garden. The easy-to-use trigger spray is ideal for those who suffer from arthritis and are unable to use a pump-style bottle.

Not suitable for low water pressure or use with water tanks, requires minimum 50psi to operate.

Tired of ill-fitting connections to pre-mixed fertiliser spray bottles? Due to strong demand, we've introduced the Fertiliser Spray Mixer so you can enjoy a reliable connection between your Hoselink-fitted hose and the Fertiliser Spray Mixer - no more leaky fittings!

How to use the Fertiliser Spray Mixer

  1. Add concentrate to the bottle, no pre-mixing required. *Please ensure you read the instructions on the fertiliser bottle as this may vary.*
  2. Set dilution ratio by turning the selector dial until the desired number is aligned with the brass knob on the side of the dial.

    To work out the setting required for your own brand of fertiliser use the table below:

  3. Attach the Mixer to your Hoselink-fitted hose using the included Accessory Connector.
  4. Turn water flow on. Squeeze the trigger and spray on to your lawn or garden as required.

Installing the flow reduction

  1. Unscrew the bottle and remove the filter form the base of siphon tube.
  2. Unscrew the brass pin from above the selector dial.
  3. Push the flow reducer into the bottom of the siphon tube. 
  4. Put siphon tube filter back in place and reassemble the bottle.

How it works

The selecter dial draws a measured amount of fertiliser up from the spray bottle and mixes it with water flowing through from the sprayer. Dilution rates are printed on the outside of the bottle for convenience. The benefit of this system is it allows for an even spread of fertiliser.

A note about the Fertiliser Spray Mixer

This product is suitable for use with Hoselink fertilisers and commercially available liquid fertilisers or soaps. If you are using a concentrate please follow the directions on the bottle (it may recommend diluting with water before use). 

It is not suitable for use with granulated fertilisers, compost or worm farm liquid as the sediment in these liquids will clog the spray outlet.

Clean and reuse! Fill bottle with water, set dial to 10 and spray until empty. This will prevent the contamination of multiple fertilisers/cleaning products.

Bottle holds 450ml.  Spare bottles are also available here

This product comes with a Hoselink connector included for quick connection to your Hoselink-fitted garden hose. If you are new to Hoselink then you will need to either convert your hose to Hoselink no-burst fittings (we recommend the Water Wise Starter Kit) or alternatively you can unscrew the Hoselink connector from this device and replace it with a standard click-on style male connector (please note we do not sell these).




Product specifications

Model Name Fertiliser Spray Mixer
Model Number 5538-WG
Material ABS plastic, PVC bottle
Colour Black and white
Maximum Pressure 150psi
Minimum Pressure 50psi
Bottle Volume 450ml
Hose Fitting Size 12mm
Warranty 1 year


Frequently asked questions for Fertiliser Spray Mixer

Q. How can I achieve an exact measurement?

A. In reality, you cannot achieve an exact measurement as there are many variables including your water pressure, how much concentrate you use, which brand you use, what type of product you are using.  You can vary output by increasing or decreasing the flow rate, or by increasing or decreasing the concentrate used.

Q. What Setting do I need to use?

This will depend on what type of fertiliser you are using. Recommended dilution rates will be on the back of the product. 

The dilution rates detailed on the mixer are per litre of water. Hoselink fertilisers will indicate a per litre setting on the back of the bottle
Other brands often use a dilution rate based on a 9 litre watering can. In these instances, to work out the per litre amount, divide the dilution by 9.

Use the Table Below to work out the required dilution rate:


Once you find your dilution rate, refer to the table on the back of the mixer to find the closet setting to achieve that dilution rate.

Q. How much fertiliser do I put in the bottle?

You can put as much fertiliser as you want in the bottle. The amount in the bottle does not determine how much fertiliser is being used. This is all based on the dilution rate setting.
It’s often easier to put in more than you need.
Any unused fertiliser can always be poured back into your fertiliser container when finished.

Q. My fertiliser bottle is filling up with water, how do I fix this?

Generally, if the bottle is filling up with water it indicates that water pressure is lacking. Try turning up the water from the tap or checking for leaks.

Q. The sprayer is not drawing up the fertiliser, only water is spraying out. How do I fix this?

Check there is enough fertiliser in the spray bottle to reach the siphon tube. Feel free to put more fertiliser in than you need as it always can be poured back into its original bottle if not needed.
If using a reducer, the dilution rate may be so great that it does not appear to be drawing up much fertiliser, and won’t be visible to the naked eye. Not sure? The best way to test this would be to fill the bottle with water, reduce the dilution rate to setting 10, and turn the hose on. If the liquid is sucked up, then you will know that the mixer is functional.

Q. When should I use the reducer?

Looking at the dilution rate table printed on the spray mixer;
Only use the reducer if the you cannot get the dilution rate you need without its use.
The reducer is designed for products that require a very high dilution rate. So that only a miniscule amount is used per litre of water.

Q. How do I use the reducer?

To use the reducer; remove reducer from top of selector dial. Unscrew the bottle, take the filter off the bottom of the siphon tube. Place the reducer (Thread side up) into the siphon tube and replace the filter. Screw bottle back on to spray head.

Q. Why are there 2 dilution lists on the bottle?

The two lists show the difference in dilution rate, with and without the reducer in place.
The reducer should only be used to achieve a very high dilution rate ( as per the instructions on your fertiliser)

Q. What Fertilisers / concentrate can you use in the bottle?

Most fertilisers are fine to use.
Granulated fertilisers, when used with the reducer, can cause blockages

Q. Do you have larger bottles? or spares?

We only offer the one size bottle – 450ml.
Spare bottles will be available late 2020

Support page

View Product Support page


Product reviews

Customer Reviews
4.6 Based on 345 Reviews
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Filter Reviews:
  • Hoselink
  • fertiliser
  • bottle
  • garden
  • quality
  • water
  • spray
  • spray mixer
  • plants
  • service
William R.
Australia Australia
I recommend this product

This is an excellent product, easy to use and works well

James R.
Australia Australia
I recommend this product

Great customer service

Have used this product for a while now. When I had some issues with it, the customer service team was amazing. Thanks again

Allen S.
Australia Australia
I recommend this product


Easy to use and a great sturdy professional bit of kit

Peter S.
Australia Australia
I recommend this product


It’s a very good product A size selection of the container, maybe 1 Ltr maybe even 2 Ltr ?for lager lawns The pick up straw could be a little longer But overall it’s an easy way to spray lawns evenly

Craig j.
Australia Australia
I recommend this product

Spray bottle

Spray bottle very easy to use great for spraying seasol on our grass and plants well made great cost for something that works this well easy disperse rates with great coverage

Michael D.
Australia Australia
I recommend this product

Fert Gun & Hose reels

Not very satisfying. In principal it probably works well if you have the required pressure. I have just enough pressure than the minimum requirement and it still doesn’t work. There is also the issue how this product and including the reels have important information to know prior to buying that is listed in the FAQ and not in the product description. I don’t know many people who read a FAQ prior to buying something. Seems like a flaw.



Hi Michael, thank you for your review and feedback. Sorry to hear you have had no luck with our fertiliser spray mixer. This is definitely something we can look at including with the description of the products as we do not want people to feel like they have been blind-sided. We have passed this over to our product team to make the necessary adjustments. Again, apologies for the inconvenience this has caused. Kind regards, The Hoselink Team

Patricia G.
Australia Australia
I recommend this product

Fertiliser spray mixer

The wind finally stopped so I was able to try it out. I was very impressed. I used it for my pest oil for aphids. Worked well. I used my spare bottle for Seasol. It was excellent. I was able to water all my pot plants without having to keep filling up the watering can. Certainly made it easier. The only hiccup I had was I thought, after reading the directions on the bottle I had to use the flow reducer. When I thought it wasnt working as well as I hoped, I googled it. 'This answered all my questions. I can thoroughly recommend this product.



Hi Patricia, thank you for taking the time to leave us such a lovely review. We love hearing from our happy customers! We are so pleased to hear you are as happy with our products as we are. We hope to keep impressing you with our range in the future! Thanks, The Hoselink Team.

leah m.
Australia Australia
I recommend this product

Fantastic Fertiliser Function

Fantastic attachment and works wonders. I recommend this product.

Jennifer G.
Australia Australia

Spray gun

This product was very easy to use. I liked that instructions are printed on bottle so can refer to dilution rates without looking for package insert. Gave a good focussed spray so went to intended location. Very happy with it.



Thank you for taking the time to leave a review Jennifer! Good to hear you had an easy set up, enjoy your Fertilising

Melody L.
Australia Australia
I recommend this product

Fertiliser spray mixer

Fantastic product. I use it for fertiliser, soil wetting agent and it’s also great for washing the car. The option to purchase a larger bottle would be good, particularly when using it for fertiliser on a large property.



Hi Melody, Thank you for your feedback! We're delighted to hear that you're finding our product versatile and useful for various purposes. We appreciate your suggestion for a larger bottle option, and we'll certainly it on. If you have any more ideas or questions in the future, don't hesitate to get in touch. Happy gardening and car cleaning! The Hoselink Team