Poterium - A small group of herbs or shrubby plants of the Rose order, confined to north temperate regions, and worthy of some attention for the rougher parts of pleasure grounds, and for the wild garden, their dense spikes of flower being attractive and useful for cutting. P. canadense is a good back-row plant for the border, 4 to 5 feet high, with deeply-cut grey-green foliage and long spikes of creamy-white flowers from the tip of every shoot during autumn. Several plants should be grouped to make a good bush-like mass. P. sitchense is much shorter, rarely exceeding 2 feet, and bearing purplish flowers; this grows best in damp ground. P. tenuifolium, with spikes of white flowers, is also worth growing, while P. Sanguisorba, or Salad Burnet, is a pretty native plant with green or purple flowers, growing in dry places.
Japanese Burnet (Poterium Obtusum) - From the garden standpoint, this new species is an acquisition. Vigorous habited and attaining 3 feet high, it flowers in July, producing numerous arching branched spikes of rosy-crimson flowers. In cool soil and thin screening shade it is most effective. Few plants are more desirable. Japan.