▁Pat ▁District ▁of ▁U tt ar ad it ▁Provin ces . ▁The ▁park ▁was ▁established ▁as ▁Th ailand ' s ▁ 1 0 9 th ▁national ▁park ▁in ▁ 2 0 0 8 . ▁ ▁Ph u ▁So i ▁D ao ▁water fall ▁and ▁Sa ith ip ▁water fall ▁are ▁some ▁of ▁the ▁attra ctions ▁of ▁the ▁park . ▁The ▁landscape ▁is ▁similar ▁to ▁the ▁area ▁on ▁the ▁Ph u ▁K rad u eng ▁plate au ▁further ▁sout heast , ▁with ▁grass lands ▁and ▁p ine ▁trees ▁such ▁as ▁P inus ▁k esi ya . ▁Bet ula ▁al no ides , ▁Sch ima ▁wall ich ii ▁and ▁Sh ore a ▁si am ensis ▁are ▁among ▁the ▁other ▁species ▁of ▁trees ▁present ▁in ▁the ▁forest . ▁U tr icular ia ▁spin om argin ata ▁and ▁U tr icular ia ▁ph uso ida o ensis ▁are ▁en demic ▁plants ▁on ▁Ph u ▁So i ▁D ao . ▁ ▁The ▁most ▁highlight ed ▁thing ▁here ▁are ▁dok ▁ng on ▁nak ▁( ด อ ก ห ง อ น น า ค – M urd ann ia ▁gig ante a ) ▁which ▁will ▁blo om ▁all ▁over ▁the ▁fields ▁during ▁ra iny ▁season ▁( <0xE0> <0xB9> <0x8B> J uly – August ), ▁causing ▁a ▁beautiful ▁pur ple ▁scen ery . ▁ ▁See ▁also ▁Ph u ▁So i ▁D ao ▁ ▁References ▁ ▁External ▁links ▁ ▁Tre k th ailand ▁- ▁Ph u ▁So i ▁D ao ▁National ▁Park ▁National ▁Park s ▁& ▁Marine ▁Res erves ▁- ▁Ph