If you’re out in the garden this week, keep an eye out for these invasive plants
Vita Molyneux Travel reporter
11:52, 03 Apr 2026
Rag weed in the garden can trigger asthma(Image: Getty)
If you’re planning to venture into the garden this Easter weekend, it’s an ideal opportunity to thoroughly check you’re not inadvertently harbouring any invasive species.
Most British gardeners are well acquainted with the headache of Japanese knotweed and the challenges involved in eliminating it.
There are four additional invasive plants requiring vigilance. Frequently disregarded because they resemble ordinary plants, these four weeds require careful removal from the garden and proper disposal.
From asthma to structural damage, these plants could severely harm your garden and your wellbeing.
Invasive weed removal specialists, Environment Controls, are encouraging the public to remain vigilant for these four weeds, reports the Express.
Some of these weeds can be dangerous – including the Devil’s Trumpet(Image: Getty)
Gaultheria shallon
This flowering weed isn’t poisonous, but it can rapidly dominate a garden through its thick growth. It can swiftly overwhelm indigenous plants and hinder tree regeneration in woodland areas.
It’s widespread throughout southern England and has recently been prohibited in Scotland under the Wildlife and Countryside Act.
Tree of Heaven
Originally from China, this rapidly-growing tree is now established throughout the UK. It’s recognised for its powerful, disagreeable odour and its invasive root network.
This plant can swiftly compromise building foundations, drainage systems and sewers if allowed to spread unchecked.
Ragweed
Ragweed is particularly concerning if you suffer from hay fever. It generates billions of pollen particles and can prove a significant trigger for allergy sufferers.
The reaction can be so acute it can even result in developing asthma.
Devil’s Trumpet
While it may appear attractive, the Devil’s Trumpet can pose serious risks if mishandled. Also referred to as Thorn Apple, this extremely poisonous plant presents a significant hazard.
Every part of the plant is highly toxic to both humans and animals, and consumption can lead to serious health complications as well as intense visual and auditory hallucinations.
It should never be touched without appropriate protective equipment.
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