Syringa vulgaris four-lobed apex 5–8 mm across, usually lilac to mauve, occasionally white. They are arranged in dense, terminal panicles long. The fruit is a dry, smooth, brown capsule, 1–2 cm long, splitting in two to release the two-winged seeds. "Syringa vulgaris" was first formally described by Carl Linnaeus in 1753 and the description was published in "Species Plantarum". The specific epithet ("vulgaris") is a Latin word meaning "common" or "usual". Lilacs—both "S. vulgaris" and "S." × "persica" the finer, smaller "Persian lilac", now considered a natural hybrid—were introduced into northern European gardens at the end of the 16th century, from Ottoman
Trial garden flowering season, and disease or pest tolerances or resistance. Vegetables are judged looking for such traits as speed to harvest, total yield, fruit taste, fruit quality, ease of harvest, plant habit, disease, and pest resistance. Trial garden A garden grown specifically for the purpose of testing and evaluating plants is called a trial garden. Universities, plant breeders, and garden-industry companies frequently have trial gardens, as do many private and public botanical gardens and professional garden journalists. In the classic trials model, newly developed varieties of plants are compared with the closest similar industry standard plant throughout their life cycle—from germination/propagation