Quassia Chips

45 reviews

Quassia Chips

45 reviews
$7.58 Regular price
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Botanical Name: Picrasma excelsa

Quassia chips come from the white bark of Picrasma excelsa a tree that is indigenous to Jamaica and many other islands of the West Indies. The tall elegant trees are not troubled by insects or pests as the entire tree in particular the timber, contains quassin an astringent resin which is a bitter and very effective insecticide.

Quassia is used for debilitated digestion and loss of appetite, as in convalescence. It is also used for Anorexia nervosa, malaria, nematode worms and threadworms. Externally it can be used for Lice infestations.

Quassia Chips contain insecticidal properties against flies, red spider mite, aphid and woolly aphid. It is also great to repel possums.

Using Quassia Chips as a possum deterrent

To repel possums in the roof the chips can be spread around the area where they are entering the roof as well as throughout the roof cavity. Homemade Quassia spray is easily made and can also be sprayed around the roof cavity and entry points.

To repel possums in the garden

For ornamental plants you can spray on the leaves, stems and trunk of the plants, you can also do this on fruit trees avoiding any soft skinned fruit that is ready to be picked.

If you are protecting your edible herbs and vegetables from being the eaten it is best to spray to saturate the ground around the plants, if the quassia is sprayed on the foliage of your herbs and vegetables they will not only taste bitter to the possums but also to you! However it does work best when sprayed on the leaves that they like to eat, so leave a week before eating your herbs and vegetables

Apply quassia spray for 5 days in a row. This should be long enough for the possum to realise that this is not the tasty treat that he thought it was. Re apply the quassia spray after rain or watering. If the possum comes back for more repeat the spray for another 5 days.

Quassia Spray

Use 200g of quassia chips to a 9-10 litre bucket of water let them soak for 24 hours before straining off the bitter liquid. This can then be sprayed on the affected area.

Adding 5g of pure soap flakes per litre of spray is an effective wetting agent for the above spray.

Don't spray it on food crops less than a week before you consume it

Parts Used

Stem wood


Bitter tonic, sialagogue, anthelmintic


Excess causes gastric irritation and vomiting.

All information provided on this website is for informational purposes only. Please seek professional advice before commencing any treatment.


Our shipping costs are a flat rate, meaning you can add any amount of products to your order and you will pay the same.

Regular Post - $10.95
Express Post - $12.95 (If your order contains a plant express is required)


We send (Australia wide, excluding Western Australia and Tasmania):

Monday and Tuesday (for all zones)


We send (Australia wide):

Monday to Friday

*Subjected to actual conditions. Find out more about our Delivery information.


We want you to be thrilled with your purchase from us. If you are not satisfied with an item and need to return it, we're here to help.

Herb Plants
- If you are unhappy with the quality of Herb plants they must be photographed on the day of receiving and emailed to us within 24 hours.

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Filter Reviews:
Bernadine O.

Pesky Possums turned out to be Rats

I purchased quassia chips to deter what we thought were possums in the roof - they were delivered really quickly thank you. We tried putting a light in the roof cavity - the quassia chips were spread about and soaked in water and sprayed about the roof but they didn't budge - we mounted a possum box in the nearby tree and we mounted a security camera on the roof and found we had a large family of fat rats not possums. They ate through five bags of stored kitty litter made from corn. So I have spread the quassia chips around the vegie patch just in case we end up with possums one day. Thanks Sandra - I also liked your lovely little personal note on the card. Nice shopping experience all round - I definitely would recommend purchasing from Mudbrick Herb Cottage. (as for the rats - well they are almost all gone)

Australia Australia

Good service

The product was good quality and exactly what I was looking for.

Australia Australia

Too expensive

Happy with the service not sure if the product worked to keep possums away but I also feel for the quantity it was far too expensive. I'm sorry I will not purchase again. Thank you

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