ul ia , ▁including ▁within ▁the ▁G arg ano ▁Pen ins ula , ▁and ▁the ▁near ▁the ▁town ▁of ▁Monte ▁St ▁Ang elo . ▁ ▁Hab itat ▁It ▁grows ▁on ▁open ▁sun ny ▁s lop es , ▁or ▁in ▁me adows ▁and ▁between ▁( s par s ely ▁spac ed ) ▁shr ubs , ▁on ▁a ▁lim estone , ▁( or ▁cal care ous ▁substr ate ). ▁ ▁They ▁can ▁be ▁found ▁at ▁an ▁alt itude ▁of ▁ ▁above ▁sea ▁level . ▁ ▁Conserv ation ▁It ▁is ▁rare ▁( not ▁widely ▁spread ), ▁but ▁has ▁abund ant ▁populations ▁on ▁the ▁G arg ano ▁Pen ins ula . ▁ ▁Cult iv ation ▁It ▁is ▁hard y ▁to ▁US DA ▁Zone ▁ 9 , ▁It ▁probably ▁can ▁toler ate ▁more ▁than ▁− 1 5 ▁° C , ▁but ▁in ▁its ▁habitat ▁( Ital y ), ▁the ▁winter s ▁are ▁normally ▁not ▁col der ▁than ▁− 1 0 ▁° C . ▁It ▁can ▁toler ate ▁m ild ▁wet ▁winter s ▁and ▁hot ▁dry ▁sum mers . ▁ ▁It ▁pre fers ▁to ▁grow ▁in ▁well - dra ined ▁so ils , ▁containing ▁lim estone , ▁or ▁cal care ous ▁so ils . ▁ ▁It ▁lik es ▁positions ▁in ▁full ▁sun ▁ ▁It ▁can ▁be ▁grown ▁in ▁a ▁rock ▁garden . ▁ ▁In ▁cultiv ation , ▁it ▁is ▁thought ▁that ▁this ▁species ▁can ▁re - blo om ▁in ▁the ▁aut umn . ▁ ▁It ▁is ▁not ▁very ▁well ▁found ▁in ▁plant ▁nur series , ▁only ▁grown ▁by ▁plant