Liquid or granular fertiliser?
Quick answer
Both work; they suit different jobs. Liquid fertilisers act quickly and are easy to apply with a hose-end sprayer, but the effect is shorter, so they're applied more often. Granular fertilisers, especially slow-release types, feed for longer from one application, but need a spreader and usually watering in. Many people use granular as the base and liquid as a top-up.
Why this happens
Liquid and granular fertilisers deliver nutrients in different ways, and the best choice depends on the job and the equipment you have.
| Liquid | Granular | |
|---|---|---|
| How fast it works | Quickly; colour response is usually fast | Slower to start; slow-release types feed over weeks |
| How long it lasts | Shorter, so applied more often | Longer from one application |
| Equipment | Hose-end or pump sprayer | Broadcast or drop spreader |
| Watering in | Check the label; some can sit on the leaf | Usually needs watering in |
| Evenness | Easy to apply evenly with a calibrated sprayer | Even if the spreader is calibrated; striping if not |
| Best for | Quick top-ups, small lawns, trace elements | The main feed of the season, larger lawns |
Using both
A common approach is a slow-release granular feed as the base for the season, with a liquid top-up when the lawn needs a lift. That combination gives steady feeding without large swings in growth.
What matters more than the format
The analysis on the label (the nutrients and their percentages), the rate, and applying it evenly matter more than whether a product is liquid or granular. Two products that look different may deliver similar nutrients; compare them by what’s in them and what each application costs on your lawn.
Which suits a small lawn?
For a small front lawn or nature strip, a liquid through a hose-end sprayer is often simplest: no spreader to buy or calibrate, and the sprayer can also apply a wetting agent. For a large backyard, a slow-release granular through a broadcast spreader covers the area faster and feeds for longer between applications.
What you can do
Decide what you needCheck first
A quick colour boost or a top-up suits a liquid. A season-long base feed suits a slow-release granular.
Check your equipmentCheck first
Liquids need a hose-end or pump sprayer; granules need a spreader. Calibrate whichever you use.
Compare cost per application
Use the Cost and Coverage Calculator with each product's label rate and pack size.
Apply at the label rateProduct step
Follow each label for rate, water volume and watering in.
What not to do
- Comparing products by pack price instead of cost per application.
- Hand-throwing granules, which causes striping.
How much do I need?
A label rate of "20 mL per 100 m²" means: Rate 20, mL, per 100 m². Per hectare? Use 10,000 m².
How much you need
Enter your lawn area and a rate to see how much product and water you need.
Log it
Keep a record of what you applied, when, and at what rate. Your Lawn Journal works on this device without an account, and reminds you when the next step is due.
What's next
Related grass types, weeds, pests and diseases
Related questions
Related guides
Didn't answer your question?
Ask LawnMan. We check existing answers first, and if nothing fits, your question goes on our list to answer.
Who wrote this, and what it's based on
This page hasn't been reviewed by our technical reviewer yet [CONFIRM: reviewer]. Until it is, it isn't listed in search engines. How we write and review
Sources
- Understanding pesticide chemical labels (booklet), Australian Pesticides and Veterinary Medicines Authority (APVMA)Reading directions for use. Accessed 4 October 2026.