Heathfield Park SSSI

{{Short description|Protected area in East Sussex, England}}

{{Use dmy dates|date=April 2022}}

{{Infobox SSSI

|image= Heathfield Park SSSI (1).jpg

|image_caption =

|name= Heathfield Park

|aos= East Sussex

|interest=Biological

|gridref={{gbmappingsmall|TQ 594 209}}

|area= {{convert|41.0|ha|acre|abbr=off}}

|notifydate= 1986

|map=[https://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271001675%27 Magic Map]

}}

Heathfield Park SSSI is a {{convert|41 |ha|acre|abbr=off|adj=on}} biological Site of Special Scientific Interest east of Heathfield in East Sussex.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S1001675&SiteName=&countyCode=14&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Heathfield Park | series= Sites of Special Scientific Interest|publisher=Natural England|accessdate = 24 February 2019}}{{cite web|url= https://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271001675%27|title=Map of Heathfield Park|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate= 24 February 2019}} It is part of Heathfield Park, a Grade II* listed building{{NHLE|num= 1194135 |desc= Heathfield Park |accessdate= 24 February 2019}} and park.

This is a steep valley carved by a stream. The sheltered wooded habitat has a warm and moist microclimate and it has a number of plant species usually restricted to western Britain, such as Cornish moneywort, hay-scented buckler-fern and the liverwort Frullania tamarisci. The site is also important for lichens and 76 species have been recorded.{{cite web|url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1001675.pdf |title=Heathfield Park citation|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate= 24 February 2019}}

The site is private land with no public access.