Good idea for multiple reasons: 1) equisetum grows so quickly and make even the newest newbie of a gardener feel accomplished and happy, 2) equisetum can get out of control and this container will prevent that from happening, 3) creates privacy and covers up some unsightly areas
Astilboides tabularis. It is the perfect plant for a shady area and does best in heavy, wet soil. It's also a good choice as a marginal plant next to a large pond. Astilboides does flower, sending up creamy white, Astilbe-like plumes in July, but the leaves are the plant's main attraction. It can take several years for a good-sized clump to form, but allow plenty of room for growth when planting, as a single plant can grow to 120cm (4ft) wide.