Top 9 Blue Dye for Lawn – Garden Fertilizers

As an Amazon Associate I earn from qualifying purchases.

1. Liquid Harvest


Turf Mark and Blue Herbicide Marker, Fertilizer Marking Dye, Herbicide Dye, Liquid Harvest Lazer Blue Concentrated Spray Pattern Indicator 8 Ounces Perfect Weed Spray Dye

Liquid Harvest #ad - Easily marks grass and lawns. Indicates where spray mixtures have been applied. Mixes only with water based solutions, will not work with oil based. Non-permanent and nonstaining. Mix with herbicides, fungicides, pesticides, & fertilizers.
BrandLiquid Harvest #ad
ManufacturerLiquid Harvest #ad
Weight0.4 Pounds
Part Number125



BASF 10059 Blue 32oz Turf Mark

BASF #ad - Temporary formulation - will not permanently stain treated surfaces. Non toxic to people, animals and the local environment. Great for being able to track where you've sprayed so you don't miss any areas. Can be used inside and outside the home.
BrandBASF #ad
ManufacturerBASF #ad
Height8 Inches
Length2 Inches
Weight2.44 Pounds
Width4 Inches
Part Number10059

3. Liquid Harvest


Liquid Harvest Lazer Blue Concentrated Spray Pattern Indicator, 32 Ounces

Liquid Harvest #ad - Mixes only with water based solutions, will not work with oil based. Indicates where spray mixtures have been applied. Easily marks grass and lawns. Non-permanent and nonstaining. Mix with herbicides, fungicides, pesticides, & fertilizers.
BrandLiquid Harvest #ad
ManufacturerSanco Industries #ad
Height6 Inches
Length9 Inches
Width6 Inches
Part Number117

4. Liquid Harvest


Liquid Harvest 118 Lazer Blue Concentrated Spray Pattern Indicator, Gallon, Blue, 1

Liquid Harvest #ad - Mix with herbicides, pesticides, fungicides, & fertilizers. Mixes only with water based solutions, will not work with oil based. Indicates where spray mixtures have been applied. Non-permanent and nonstaining. Easily marks grass and lawns.
BrandLiquid Harvest #ad
ManufacturerSanco Industries #ad
Height10.26 Inches
Length2 Inches
Width4.39 Inches
Part Number118

5. Bluewater Chemgroup


Turf Mark and Blue Herbicide Marker, Fertilizer Marking Dye, Blue Spray Marker, Weed Spray Dye, Organic Herbicide Marking, Herbicide Dye, 8 Ounces

Bluewater Chemgroup #ad - Has a blue colorant that indicates where you have applied a chemical spray. Non permanent and Will Not Stain. Works great with remuda & other herbicides as well as fertilizers & insecticides. Easily marks Grass and Lawns.
BrandBluewater Chemgroup #ad
ManufacturerBluewater Chemgroup #ad
Part Number154

6. Petra


Blue Mark Spray Indicator for Home and Commercial Sprayer Use 8oz, Super Strength Concentrate 3X More Than Others, for Herbicides, Fertilizer & Weed Killer, PetraTools Blue Herbicide Lawn Dye

Petra #ad - And with a concentrate that is 3x’s stronger, plant damage, you get even more value for your money. It naturally disappears with rainfall and exposure to sunlight and doesn’t stain your shoes, clothes, or pets. Compatible with tenacity herbicide, surfactant for herbicide, mesotrione, & all herbicides.100% safe to Use, and the environment.

Business, sell, we design, committed to providing you rock-solid sprayers and solutions for all your growing and lawn needs. With its extremely visible blue color, herbicides, you can quickly locate the liquid products applied on your lawn and clogged nozzles or blockages in your sprayer. Helps you save and maximize liquid products and money. You also avoid skipped areas, or possible burns from inaccurate spraying of chemicals. Saves chemical solution and money: by having a blue indicator, you prevent over-spraying or overlapping liquid applications. 3x super concentrate blue marker: petratools sprayer’s blue is a highly concentrated water soluble spray colorant for fertilizers, and weed killer products.

As a dependable and trusted sprayer manufacturer, pets, sprayer’s Blue is formulated with non-irritating ingredients - our spray marker is 100% safe to use around people, PetraTools is developing the lawn solutions you need for the sprayers that get the job done right. Quickly fades: no need to worry about seeing your yard blue for a long time! Our blue turf mark will fade in 24-48 hours. This is a super concentrate that requires 3X’s less marker per gallon compared to other lawn dyes so that you get 3X’s the value for your money.
BrandPetra #ad
ManufacturerPetra #ad
Part Number001

7. LawnStar


Premium, Weed, Professional Ultra Concentrated, Multipurpose, Highly Visible Formulation Prime for Marking Herbicides, Turf 32 OZ, Fertilizer, LawnStar Blue Spray Pattern Indicator Marker Dye

LawnStar #ad - Highly visible blue - what’s worse than spraying your land for half an hour, only to find the trail you thought you were making is non-existent? We can’t think of much! Our spray pattern indicator will leave a solid trail behind that won’t give you the blues! Big bottle, great color: simple mix half an ounce per gallon of spray solution and never lose track of where you sprayed again.

Consistent spray - ideal for marking herbicides and fertilizers, so you can keep track your progress easily, our ultra-concentrated solution ensures you get a steady, smooth blue color, saving time and countless ‘did I spray there already?!’ headaches. Protected with the lawnstar guarantee: we understand trying new things can be tough, so let us take all of the risk for you! Buy it, try it, and if you aren't absolutely thrilled with the results you get from using our product simply contact us within 30 days of purchase and we'll give you a full refund.

Professional standard - Trusted by professionals and homeowners alike to make treating your lawn for weeds and grubs a breeze.
BrandLawnStar #ad
ManufacturerLawnStar #ad

8. Monterey


White, 16 oz, Monterey LG1142 Spray Solution Colorant Mark-It Blue Dye

Monterey #ad - Depending on usage, soil drench, apply as a foliar spray, or soil incorporation. It works great with Roundup or Remuda, fertilizers, pesticides, and herbicides. Breaks down in heat and light - the blue color of the product breaks down with exposure to heat and sunlight.

No permanent stain - mark-it blue is an indicator that will not permanently stain foliage or skin, but if it is spilled on fabric, it should be washed off before it has a chance to dry. Spray identification - after applying insecticide, herbicide, or fungicide to your lawn or garden, use Monterey's Mark-It Blue Spray Solution Colorant to indicate where you have applied a chemical spray. Ideal for a variety of applications - this product can be used for golf courses, parks, cemeteries, and any other turf or grass areas.

The more sunlight and heat, the faster the breakdown. Anywhere that spray evidence is needed, athletic fields, Mark-It Blue can be used. Avoid overlap - by utilizing the mark-it blue, you will be able to avoid overlapping sprays as well as ensure that you have applied the chemical to all desired areas.
BrandMonterey #ad
ManufacturerLawn & Garden Products #ad
Height4.5 Inches
Length3.1 Inches
Width1.3 Inches
Part NumberLG1142

9. Monterey


Monterey Mark-It Blue 32oz

Monterey #ad - Avoid skips And Overlapping. No assembly Required. Works great with roundup or remuda And Other Herbicides As Well As Fertilizers And Insecticides. Spray solution blue colorant That Indicates Where You Have Applied A Chemical Spray.
BrandMonterey #ad
ManufacturerMonterey #ad
Height1 Inches
Length1 Inches
Weight1 Pounds
Width1 Inches
Part Number100064263