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. 

The scope of this genus has been expanded greatly in recent years, to include such familiar plants as Scarlet Pimpernel (now Lysimachia arvensis). The more typical loosestrifes are always attractive to pollinators on account of their nectar and pollen production, certain species e.g. L. punctata, L. vulgaris also produce floral oils that attract a specific group of loosestrife-bees which use the oils to build and provision their nests. The larvae of several moths feed upon the leaves. L. punctata in particular has been cultivated here for nearly 400 years, and it has escaped from gardens and now become more or less naturalized over most of the country south of the Scottish Highlands.