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EarthCare Organic WeedKiller

EarthCare Organic WeedKiller naturally kills and controls a broad range of weeds, and lichen, algae and moss.


  • Glyphosate free, it is a non-selective natural contact herbicide containing pelargonic acid (nonanoic acid) which kills and controls a broad range of weeds and lichen, algae and moss
  • Use it in and around the house and garden, on paths, driveways and as a spot spray on lawns
  • Non-residual and bio-degradable – breaks up rapidly in the soil, no reside build up
  • Rapid action, visible results are seen within hours
  • Three easy to use options – two ready-to-use and one that mixes with water in your own spray applicatorSeasol Garden Australian Certified Organic logo Colour with 10767AI

Product Video


  • EarthCare Organic WeedKiller spray 1 litre RTU Home garden product 1 Lt Spray
  • EarthCare Organic WeedKiller spray 3 litre RTU Home garden product 3 Lt Spray
  • EarthCare Organic WeedKiller spray 1 litre concentrate Home garden product 1 Lt Concentrate

EarthCare Organic WeedKiller is a glyphosate-free herbicide. Its rapid, non-selective formula controls weeds including: barnyard grass, camel melon, capeweed, chickweed, common storksbill, couch grass, clover, fat hen, giant brome grass, indian hedge mustard, lambs tongue, peppercress, potato weed, perennial ryegrass, sowthistle, stinking roger, whorled pigeon grass, algae, moss and lichen.

It’s ideal to use in the garden, on driveways and paths, around buildings and as a spot spray in lawns. It works quickly to control weeds, however, it must come into contact with the green part of the plant to work effectively.

EarthCare Organic WeedKiller is an organic contact herbicide containing pelargonic acid (nonanoic acid), natural plant oils converted into a natural acid. Pelargonic acid occurs naturally in plants including geraniums. It acts on the plant foliage causing it to quickly dehydrate and collapse. Visible results are seen as browning and wilting, usually within hours of application.

Non-residual and biodegradable, it breaks up rapidly in the soil, leaving no lasting residue. It is safe to use around edible produce as there is no withholding period when used as directed.

How to use it


To be effective, EarthCare Organic Weedkiller must come into contact with the green parts of the plant. EarthCare Organic Weedkiller will control many weed species and is non-selective.

Shake well before use. Ensure that all weed foliage is totally covered with spray as EarthCare Organic Weedkiller is a contact spray only. Partial coverage will give only partial control. DO NOT spray if weeds are wet. DO NOT apply if rainfall is expected before spray deposits dry on plant surfaces. DO NOT apply in windy conditions. DO NOT allow entry into treated areas until the spray has dried. DO NOT water treated area for 24 hours to achieve maximum results. DO NOT apply if heavy rains or storms that are likely to cause runoff from soil are forecast within 3 days of application. DO NOT irrigate to the point of runoff from soil for at least 3 days after application. DO NOT allow spray to contact or drift onto plants you DO NOT want killed. If accidentally sprayed, hose off immediately to reduce injury.

Concentrate Mixing Instructions: Half fill spray tank and commence agitation. Slowly add required amount of Earthcare Organic* Weedkiller. Top up with required quantity of water. Agitate well before commencing. Spray procedure. DO NOT mix more than is needed.

General application: 70mL per litre of water

Apply by ground equipment only using for example boom or spot sprayers. Apply using a coarse droplet spray. Optimum application volumes are related to weed maturity and density. Contact with the weeds is essential for control, as such apply in sufficient water to ensure complete and thorough coverage of foliage.

Gardens, Paths, Rockeries, Driveways, Around Buildings & Sheds. Spot Spraying in Lawns and Turf Seedling and young annual and perennial weeds and grasses including; Barnyard Grass, Camel Melon, Capeweed, Chickweed, Common Storksbill, Couch Grass, Clover, Fat Hen, Giant Brome Grass, Indian Hedge Mustard, Lambs Tongue, Peppercress, Potato Weed, Perennial Ryegrass, Sowthistle, Stinking Roger, Whorled Pigeon Grass Spray to completely cover weed surface. Re-application at around 7 days may be necessary if regrowth occurs. This product may damage lawn and turf when used as a spot spray. Perennial weed species may require repeated applications to obtain long term control.
Algae, Lichen, Liverwort, Moss Spray to completely cover plant surface. For drives or heavy infestations, clean off by brushing after 3 days and re-apply if necessary.


DO NOT spray porous surfaces without prior testing. May cause discolouration on porous hard surfaces.

DO NOT allow chemical containers or spray to get into drains, sewers, streams or ponds.


Keep out of reach of children. Store in the closed, original container in a cool, dry place out of the reach of children. DO NOT store indirect sunlight. Dispose of empty container by wrapping in paper, placing in plastic bag and putting in garbage.

Where to buy EarthCare Organic WeedKiller



Will irritate the eyes. May irritate the skin. Avoid contact with the eyes and skin. When using the product wear safety glasses. Wash hands after use.


Will irritate the eyes and skin. Repeated exposure may cause allergic disorders. Avoid contact with eyes and skin. When opening the container and preparing spray wear cotton overalls buttoned to the neck and wrist (or equivalent clothing), elbow-length chemical resistant gloves and face shield or goggles.When using the prepared spray wear gauntlet length chemical resistant gloves and goggles. Wash hands after use. After each day’s use wash gloves, face shield or goggles, and contaminated clothing.


If poisoning occurs, contact a doctor or Poisons Information Centre. Phone Australia 13 11 26. If swallowed, DO NOT induce vomiting. If skin contact occurs, remove contaminated clothing and wash skin thoroughly. If in eyes, hold eyes open, flood with water for at least 15 minutes and see a doctor.

Please click here to download the Safety Data Sheet for the Ready-to-Use

Please click here to download the Safety Data Sheet for the Concentrate



Seasol EarthCare Organic WeedKiller is an extremely effective way to eliminate weeds from your garden.

Like humans, some pets can have sensitivities to certain active ingredients even if they are organic. At Seasol we do not test our products on animals and for this reason, recommend keeping pets away from the area while spraying and until the product has completely dried.

Seasol EarthCare WeedKiller is plant-based and non-residual and will break down rapidly in the soil. This is great news for you, the environment, and your pets!