This study was carried out to investigate the effects of shading and pot size on the growth of Aquilegia buergeriana var. oxysepala after planting in the landscape. The seedlings were transplanted in Pot A (D155×H150mm) and Pot B (D90×H100mm), and then grown under 0, 30, 60, and 80% shading. The number and length of petioles, thickness of leaves, fresh and dry weight were measured. The number of petioles was significantly more under 30~60% shading. The length of petioles showed longest under 80% shading, but the petioles were actually overgrown and degenerated. As a result, the length of petioles also showed better under 30~60% shading. The thickness of leaves increased more under 30~60% shading compared to 80% shading. The fresh and dry weight increased in the order of 60, 30, 0, and 80% shading. The total growth was overall best under 30~60% shading. The plants grown in pot A showed better than those grown in the pot B. A. buergeriana var. oxysepala as a ground cover plant in the landscape could be planted under about 30~60% shading (sunlight intensity; 20~80Klux or 400~1,600µmol•m-2 •s-1) by an obstacle such as a group of needle-leaf trees, an isolated deciduous tree such as Zelkova serrata (H6.0×R60), Ailanthus altissima (H8.0×R50), Ginkgo biloba (H5.5×B25), and a site screened by three to six-story building. Pot A is better than pot B when potted plants of A. buergeriana var. oxysepala are required to simply make or remove flower beds (bedding and bedding out).