Keep an Eye Out for These 2 Worms in Ontario Gardens: Here’s Why
Two potentially harmful worm species, not indigenous to Ontario, have been identified in the province, prompting experts to advise local gardeners to remain vigilant.
One of these worms hails from Southeast Asia and releases a neurotoxin upon contact, which can cause skin irritation or rashes.
The other originates from East-Central Asia and poses a threat to soil quality by reproducing rapidly and outcompeting beneficial soil organisms. Some individuals of this species are capable of leaping up to a foot in the air.
St. Thomas resident Jessica Fugard, accustomed to handling worms due to her father’s occupation as a fisherman, was surprised to encounter a Hammerhead Worm in her garden this April. Despite its intriguing appearance, she acknowledges the potential risks associated with it.
Fugard’s video of the worm attracted significant attention on a gardening Facebook group, prompting her to alert fellow growers about its presence.
Reports of Hammerhead Worm sightings have surfaced in various locations across Ontario, including Hamilton, Newmarket, and Woolwich, according to the Invasive Species Centre (ISC).
Dr. John Warren Reynolds, a seasoned biologist specializing in worm species, highlights the invasive nature of the Hammerhead Worm and its ability to secrete a neurotoxin that can cause discomfort or skin reactions in humans and pets.
Furthermore, the worm’s predatory behavior poses a threat to beneficial organisms in the ecosystem.
Reynolds stresses the importance of cautious handling and disposal methods when encountering these worms in gardens. While high temperatures can help eliminate them, there is no instant solution for eradication due to their ability to regenerate from severed segments.
Another concerning species, the Asian Jumping Worm, has been increasingly observed in Ontario. Reynolds suggests that this worm’s rapid reproduction and voracious appetite for organic matter could pose a more significant threat than the Hammerhead Worm.
Members of the Halton Region’s Master Gardeners of Ontario (MGOI) have been actively raising awareness about these invasive worms, suspecting their introduction to the province via the nursery trade.
David Dutkiewicz from the ISC emphasizes the importance of researching plant purchases to prevent the introduction of invasive species into gardens. He recommends inspecting plants thoroughly, especially the root ball, to identify any hidden pests or cocoons.
Both Reynolds and Dutkiewicz encourage Ontarians to report worm sightings to the ISC or iNaturalist.ca to aid in monitoring and management efforts.
Despite the absence of regulatory measures specific to these worms in Ontario, residents are urged to report sightings to facilitate data collection and informed decision-making by relevant authorities.
