Flordon Common

{{Short description|Protected area in Norfolk, England}}

{{Infobox SSSI

|image= Flordon Common - geograph.org.uk - 163528.jpg

|image_caption =

|name= Flordon Common

|aos= Norfolk

|interest=Biological

|gridref={{gbmappingsmall|TM 182 972}}

|area= {{convert|9.9|ha|acre|abbr=off}}

|notifydate= 1985

|map=[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271001788%27 Magic Map]

}}

Flordon Common is a {{convert| 9.9 |ha|acre|abbr=off|adj=on}} biological Site of Special Scientific Interest south-east of Wymondham in Norfolk, England.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S1001788&SiteName=&countyCode=29&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Flordon Common | series= Sites of Special Scientific Interest|publisher=Natural England|access-date = 11 June 2018}}{{cite web|url= http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271001788%27|title=Map of Flordon Common|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 11 June 2018}} It is a registered common{{cite web|url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1001788.pdf |title=Flordon Common citation|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 11 June 2018}} part of the Norfolk Valley Fens Special Area of Conservation.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteGeneralDetail.aspx?SiteCode=UK0012892&SiteName=&countyCode=29&responsiblePerson=&unitId=&SeaArea=&IFCAArea= |title=Designated Sites View: Norfolk Valley Fens | series=Special Areas of Conservation|publisher=Natural England|access-date = 25 May 2018}}

Springs emerge from this chalk valley of the River Tas, resulting in a species-rich calcareous fen, including the very rare narrow-mouthed whorl snail. On higher ground there is chalk grassland, which is traditionally managed by grazing, allowing the survival of many locally rare plants.

The common is open to the public.