Fourteen species of orchid are known to grow at the reserve including some of the UK's rarest species. Park Gate Down is one of only three sites in the UK for the nationally rare monkey orchid (Ochis simia).
Fourteen species of orchid are known to inhabit the reserve, including some of the UK's rarest plant species. Park Gate Down is among only a few locations in the UK that host the nationally endangered monkey orchid (Ochis simia).