Are Rubber Trees Poisonous. Most encounters with the sap result in mild skin irritation at the site of exposure but are not debilitating in any other way. Rubber plants from the peperomia genus are not highly toxic to your pets, however, they may cause a mild stomachache.
The indian rubber plant is a toxic tree closely related to the fig tree and ficus, which all contain two toxins; Aphids damage rubber trees by sucking the sweet nectar from the leaves. Most encounters with the sap result in mild skin irritation at the site of exposure but are not debilitating in any other way.