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Invasive Species Control at a Dorset Nature Reserve: Daily Field Notes from Sherlock’s Tree & Countryside Services

SEPTEMBER 8TH - 11TH 2025

This week, our team is engaged in a multi-day ecological contracting project at a nature reserve in Dorset, concentrating on controlling invasive and non-native plant species. Our primary targets include Cotoneaster, Buddleia, Rhododendron ponticum, Yew, Laurel (which is toxic to livestock), and Japanese Knotweed—plants that significantly threaten native biodiversity.

We’ll be updating this blog daily to share our progress, methods, and field observations. Each entry will detail the practical steps we take, ecological considerations, and any notable wildlife or site conditions we encounter.

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 Day 1: Monday, 8th September – Site Setup & Initial Survey

Tasks Completed:

- Arrived on site and conducted a comprehensive walkover survey to assess infestation zones.

- Identified risks including ticks, adverse weather, and livestock.

- Mapped key treatment areas, prioritizing dense stands of Cotoneaster.

- Set up equipment: 18v battery-powered hedge cutter, chainsaw, secateurs, herbicide spray with blue dye, and PPE.

- Began mechanical cutting of Cotoneaster in the woodland strip and treated stumps with Glyphosate.

Observations:

Cotoneaster was widespread along the nature reserve boundary on Forestry Commission land, complicating management efforts. New cows on site are effectively grazing the vegetation.

Notes for Tomorrow:

Start spraying any regrowth in the woodland strip following the earlier cutting and stump treatment. Remember to apply jungle formula—ticks are abundant!

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 Day 2: Tuesday, 9th September – Targeted Herbicide Application

Tasks Completed:

Sprayed and cut in the woodland strip, targeting Laurel, Yew, Cotoneaster, and Buddleia.

Observations:

I spoke to the grazier, who is happy for us to cut and paint in the compartments where the calves are, assuring me that they are friendly. Cotoneaster is the dominant invasive species here—it's everywhere! Our hands are littered with bramble thorns from the day's work. We spotted common lizards basking in the sun and observed an array of fascinating fungi on site. The weather was favorable for our work.

Notes for Tomorrow:

Continue cutting and painting in the woodland strip. Don’t forget an apple for the horse and donkey!

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Day 3: Wednesday, 10th September – Mid-Week Progress

Today, we continued with cutting and painting despite heavy rain. We also began tackling another compartment, where we found significant Rhododendron regrowth near the cricket club.

Day 4: Thursday, 11th September – Habitat Sensitivity & Follow-Up*

As we proceed, we’re mindful of habitat sensitivity. We’re taking precautions to avoid nesting zones and protect native flora throughout our operations. We also made sure to bring an apple for the horse and donkey, who appreciate the treat!

Tasks Completed:

Sprayed Japanese Knotweed and worked on compartments near the Bat house, focusing on further controlling invasive species. THe main species we found in here was Cotoneaster.

Observations:

Gorse regrowth by the attenuation basin needs attention and may benefit from our remote-controlled robo flail later in the year.

Reflections:

Overall, we achieved a high success rate, though we faced some challenges. Recommendations for future visits or long-term management will be noted.

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Future Plans: Tackling Dense Bramble

In addition to our current work, we plan to spend four days later this year addressing dense bramble using our remote-controlled robo flail. This advanced equipment will allow us to manage the bramble effectively and enhance the overall habitat quality.

Summary & Next Steps

This week’s efforts represent a significant step toward restoring ecological balance in the Dorset reserve. By combining mechanical control with targeted chemical treatments, we've effectively reduced the spread of invasive species while protecting native habitats.