▁in ▁Pers ian ▁gard ens . ▁Text ures ▁and ▁shapes ▁were ▁specifically ▁chosen ▁by ▁architect s ▁to ▁har ness ▁the ▁light . ▁ ▁Iran ' s ▁dry ▁heat ▁makes ▁sh ade ▁important ▁in ▁gard ens , ▁which ▁would ▁be ▁nearly ▁unus able ▁without ▁it . ▁Tre es ▁and ▁tre ll ises ▁largely ▁feature ▁as ▁bi otic ▁sh ade ; ▁pav il ions ▁and ▁walls ▁are ▁also ▁struct ur ally ▁prominent ▁in ▁blocking ▁the ▁sun . ▁ ▁The ▁heat ▁also ▁makes ▁water ▁important , ▁both ▁in ▁the ▁design ▁and ▁maintenance ▁of ▁the ▁garden . ▁Ir rig ation ▁may ▁be ▁required , ▁and ▁may ▁be ▁provided ▁via ▁a ▁form ▁of ▁tunnel ▁called ▁a ▁q an at , ▁that ▁trans ports ▁water ▁from ▁a ▁local ▁aqu ifer . ▁Well - like ▁structures ▁then ▁connect ▁to ▁the ▁q an at , ▁en abling ▁the ▁drawing ▁of ▁water . ▁Alternatively , ▁an ▁animal - dri ven ▁Pers ian ▁well ▁would ▁draw ▁water ▁to ▁the ▁surface . ▁Such ▁wheel ▁systems ▁also ▁moved ▁water ▁around ▁surface ▁water ▁systems , ▁such ▁as ▁those ▁in ▁the ▁ch ah ar ▁b ā gh ▁style . ▁Tre es ▁were ▁often ▁plant ed ▁in ▁a ▁d itch ▁called ▁a ▁ju y , ▁which ▁prevent ed ▁water ▁ev ap oration ▁and ▁allowed ▁the ▁water ▁quick ▁access ▁to ▁the ▁tree ▁roots . ▁ ▁The ▁Pers ian ▁style ▁often ▁attempts ▁to ▁integrate ▁ind o ors ▁with ▁out do ors ▁through ▁the ▁connection ▁of ▁a ▁surrounding ▁garden ▁with ▁an ▁inner ▁cour ty ard . ▁Design ers ▁often ▁place ▁architect