Below the Surface: How Technigro Tackles Aquatic Weeds

Aug 26, 2026

Ask most people what threatens a healthy waterway and they'll picture rubbish, or maybe a chemical spill. Rarely do they think of weeds. But aquatic weeds are one of the most persistent threats to our natural areas across South East Queensland - quietly spreading, choking out native plants, and disrupting the ecosystems that local wildlife depend on.

It's a problem Sam knows well. As Natural Areas Operations Manager at Technigro, he's spent years working across bushland and waterways, and his focus, along with the rest of the Natural Areas team, is simple to say and hard to do: help native flora and fauna thrive by getting rid of what shouldn't be there.

"We specialise in bush regeneration, and in protecting native flora so we can establish healthy environments and ecosystems," Sam explains. "Part of that means going after declared and environmental weeds before they get a chance to take hold and impact growth across an area."

On site, it's Jayden's job to make that happen. As Team Leader for Natural Areas, he's the one assessing a waterway, figuring out where the weeds are winning, and putting together a plan to treat them and encourage natural regrowth in their place.

Getting into hard-to-reach water

Aquatic weeds don't stick to dry land, so the usual approach doesn't always work. Jayden's team uses an Argo, an amphibious ATV that moves just as easily through water as it does over land, giving them the horsepower to push through dense aquatic weed and reach areas that would otherwise be written off as too difficult.

But power isn't always the answer. For the more delicate parts of the job, the team switches to a canoe. "It's a softer approach," says Jayden. "Moving through the waterway with less wave and less splash, so the treatment already underway isn't disturbed and the surrounding habitat is left undisturbed too."

Why it matters

It's a small detail, but it says a lot about how Technigro works: knowing when to bring in the heavy machinery, and when to slow down and do it by hand. Nearly 40 years working in South East Queensland has taught the team that healthy natural areas aren't built by force alone; they're built by understanding the land and the water well enough to know exactly what each job calls for.

The result is waterways that are given a real chance to recover, for the wildlife that calls them home, and for the communities who get to enjoy them.

If you're managing a waterway affected by aquatic weeds, get in touch with our Natural Areas team to find out how we can help.