Are swan plants poisonous?
Hi Mark! Swan plants or Milkweed (Ascepias and Gomphocarpus species) are toxic, and swallowing even a small amount could be a problem. Ingestion of the plant material can affect the heart, breathing, central nervous system and the stomach. “These two shrubby plants (Gomphocarpus fruticosus and G. physocarpus) are so similar that they can be regarded as the same for all practical purposes. Like all members of the Asclepias family the tissues are full of poisonous white milky latex, so even the bladder-like fruits should not be eaten.” – You can read about some poisonous plants in New Zealand here