Spraying pesticides, fertilisers, or other treatments can often feel like guesswork. Have you covered every patch? Did you accidentally overlap and apply too much in one spot? These uncertainties can lead to wasted product, uneven results, and unnecessary costs.
TRU BLU Blue Dye Spray Indicator makes all the difference. Designed to make spray applications visible, TRU BLU helps you see exactly where you’ve sprayed, ensuring complete coverage without missing spots or doubling up. Whether you’re managing a large farm or tending to a backyard veggie patch, it’s the smarter way to spray.
In this article, we’ll explore:
What is TRU BLU Blue Dye?
Key Benefits of Using TRU BLU
Application Rates & Instructions
Tips for Safe & Effective Use
Storage, Disposal & Safety Precautions
Why Choose Garden Nursery Products?
TRU BLU is a temporary spray indicator dye that mixes with water-based solutions. It’s designed for use with pesticides, fertilisers, growth regulators, termiticides, and other sprays.
The vivid blue colour allows you to instantly see which areas have been treated, preventing skips, overlaps, or blocked nozzle issues. Over time, the colour naturally fades with sunlight and moisture, leaving no permanent marks on plants, soil, or surfaces.
Available in 1L, 5L, and 20L containers, it’s ideal for everyone from weekend gardeners to large-scale growers.
Accurate Coverage – Easily track sprayed areas.
Cost Savings – Avoid unnecessary reapplications and product wastage.
Time Efficiency – Spot skips and nozzle issues immediately.
Safety – Reduce over-spraying that can harm plants or the environment.
Versatility – Compatible with most spray systems and solutions.
Mix 225–300mL per 100L of water-based spray solution.
Adjust according to foliage colour and height.
Mix 22–30mL per 10L of water-based spray solution.
Adjust according to foliage colour and height.
Tip: Always add TRU BLU to the spray tank last unless otherwise stated on the pesticide or fertiliser label.
Ideal for spot spraying with selective herbicides.
Excellent for marking trial plots and strips.
Prevents over-spraying by visually identifying treated areas.
Do not allow spray residue to enter drains, sewers, ponds, or streams.
Store in original sealed containers in a cool, ventilated area away from direct sunlight.
Keep out of reach of children.
Recycle empty containers where possible. If not, dispose of them at an approved waste facility.
Do not burn empty containers.
First Aid
If swallowed: Rinse mouth. Do not induce vomiting.
If skin irritation occurs: Wash thoroughly with water and seek medical advice.
If eye irritation persists: Get medical attention.
For emergencies, contact the Poisons Information Centre on 13 11 26.
At Garden Nursery Products, we supply quality solutions for professional growers and passionate gardeners. Whether you’re looking for fertilisers, pesticides, soil conditioners, or application tools, we stock a wide range of premium products to keep your plants thriving. Ready to spray smarter? Visit our store or shop online.
