TAMAR Natural Resource Management volunteers removed more than 1000 kilometres of roadside ragwort in 2012, and at the weekend they resumed where they had left off last year.
The organisation held its 15th annual Pipers River Ragwort Raid on Saturday, and nearly 20 volunteers netted barely a ute load of the invasive weed in three hours.
Jayne Shapter, of Exeter, has co-ordinated the annual event for the past 12 years and declared herself delighted with the low-volume collection.
``When the raids started, we'd collect truck loads of it, and today we're lucky to fill a ute - it's a great improvement,'' she said.
``We try to do it when you can see the flowers, because they stand out so easily, but before the seeds have set and are viable - we're getting very little reinfestation.
``We've seen a huge reduction in 15 years - we're doing OK.''
The organisation yesterday turned its focus from the East Tamar to the West and, from 9am to noon, ran a second raid near Winkleigh.
Ms Shapter said a similar number of volunteers pulled ragwort from roadsides between Greens Beach and Legana and out to Birralee.
``We had great support from the West Tamar Council, who sent a truck to collect the weed - we got about twice as much as Saturday,'' she said. ``Fortunately, the roadsides hadn't been slashed and we had a successful weekend.''