The study deals with architecture and plant relations, aims to help the landscape designers to achieve integration between architecture and planting design of surrounding landscapes in accordance to the designer desire. The study also deals with employing planting design in changing architectural perception through changing its dimensions to be more horizontal or vertical and changing depth perception to be more closer or far from the viewer. The study aims at adopting a theoretical framework for the illusion phenomena to be employed in planting design in order to change architectural perception. This is done through using physiological phenomena related to eye and optical deviations in addition to using gestalt theory laws represented by proximity, continuity and direction , illusion properties for monocular and binocular clues, light and color formation clues, texture pattern formation and perspective clues.
Keywords : architecture , plant ,landscape , perception , illusions