Guide
How to Remove Grass Stains from Cotton Clothing
Pre-treat the grass stain by blotting with rubbing alcohol to dissolve pigments, massage enzyme laundry detergent into the cotton fibers, let sit for 15 minutes, then wash in cool water and air dry.
Context
Conditions that change the method
- Color-sensitive — Test rubbing alcohol on an inconspicuous seam first to verify colorfastness on brightly dyed cotton.
Rubbing alcohol is flammable
Use rubbing alcohol away from open flames and in a well-ventilated area. Rinse the garment thoroughly before putting it in a washing machine or dryer. If detergent or alcohol gets in eyes, flush with clean water immediately.
What you need
- Rubbing alcohol (isopropyl alcohol 70%)
- Liquid enzyme laundry detergent or enzyme stain spray
- Microfiber cloths or clean white rag
- Cold water
- Shake or brush off any dry surface mud or loose grass debris from the dry fabric.
- Dampen a clean white cloth or cotton ball with rubbing alcohol and gently blot the green stain from the outside edges inward.
- Rinse the treated area with cold water from the backside of the fabric to flush out loosened plant dyes.
- Apply liquid enzyme laundry detergent directly onto the stain and gently rub the fabric together to work the enzymes into the weave.
- Allow the enzyme detergent to work for 15 to 20 minutes without letting the fabric dry out.
- Wash the garment in the washing machine using the warmest water setting safe for the cotton fabric label, then inspect before machine drying.
What to avoid
- Never put a stained cotton garment in the dryer before the green mark is completely gone, as hot dryer heat permanently sets plant pigments.
- Avoid chlorine bleach on colored cotton, which will strip the fabric dye.
- Do not use hot water on fresh grass stains, which can cook protein components into the cotton fibers.
Products
What to use
- Rubbing alcohol70% to 91% isopropyl alcohol used as a fast-evaporating solvent to dissolve adhesive stickiness, ink pigments, and permanent marker marks.
- Enzyme cleanerA biological cleaner formulated with enzymes (proteases, lipases, amylases) that consume organic waste, uric acid crystals, and pet odors at the molecular level.
- Liquid laundry detergentStandard liquid surfactant detergent used as a spot pre-treater to penetrate fabric weave and lift oily binders and tannin dyes.
- Microfiber clothA reusable cloth that lifts film and leftover moisture without scratching glass. Use a clean face of the cloth as residue comes off.
Related
Related guides
FAQ
Questions people ask
- Can I remove an old grass stain that has already been through the wash?
- If it hasn't been heat-dried, re-soak the garment in oxygen bleach and warm water for several hours before re-treating with liquid enzyme detergent. If it went through a hot dryer, the dye bond may be permanent.
- Why is an enzyme detergent necessary for grass stains?
- Grass stains consist of chlorophyll dyes combined with complex plant proteins and sugars. Protease and amylase enzymes specifically break these biological bonds apart.
Sources
Sources
- Stain Removal Guide for Fabrics and Clothing — American Cleaning Institute