Lysimachia

Related to primulas, thus enjoying similar conditions. These will thrive in full sun, if the soil remains moist. If the soil dries out to much, then a more dappled shade position maybe preferable, otherwise they might wilt and look miserable. Generally perennials, mostly upright, with some ground-cover spreaders. Flowers, yellow, white, generally in upright, dense, spikes, during summer.