East Yorkshire company, Ormston Technology, distributor of professional GPS devices, is supplying the National Trust with the mapping equipment
The three-year survey is nearly 60% complete and the Trust has been able to record details of over 120,000 plants covering 13,000 different species.
The National Trust Plants Collection Curator Franklyn Tancock said: "The National Trust has the largest collection of garden plants in single ownership in Europe, if not worldwide. GPS based plant surveys are an important first step in creating a record of the plants in our gardens. Information from the surveys is downloaded into our Plant Database along with a photograph of each plant recorded. This information is helping us manage the collections, interpret them for our visitors and monitor how they evolve over time, with climate change."
"The DigiTerra Software from Ormston Technology is a big hit with staff at our many properties. We have recently purchased more Ashtech MMCX GPS receivers since our initial order of two years ago as they have proven to be highly suitable to our requirements - ease of use and reliability being a very important factor. We have also purchased the Half License Dongle, which allows our surveyors to continue to use the GPS software whilst the unit is in use at another property."
Ormston Technology MD Tim Pybus said: "The National Trust has been using our GPS equipment for plant surveys for over two years.
"Recent advances in technology mean that we have been able to provide support to National Trust gardeners and volunteers, carrying out the surveys. Our equipment allows them to accurately plot and record each plant using the new Ashtech handheld data collection device with GPS receiver and MobileMapper CX".