Interesting that they use a couple specific ornamental cloned plants as the sources for the data. I was wondering how they gather the data and if aerial imagery

Interesting that they use a couple specific ornamental cloned plants as the sources for the data. I was wondering how they gather the data and if aerial imagery is used but it looks like they use observations from a mix of the public and reaserchers. There are some other campaigns focused on different plant phenomena here https://www.usanpn.org/nn/campaigns https://www.usanpn.org/nn/campaigns One plant surveyed is Chinese Lilac: https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=364542&isprofile=0& https://www.missouribotanicalgarden.org/PlantFinder/PlantFin... The reporting questions are described here: https://mynpn.usanpn.org/npnapps/species/Syringa/chinensis https://mynpn.usanpn.org/npnapps/species/Syringa/chinensis