A mass of Goat's Rue (also known as French Lilac), the medicinal herb that led to metformin. Source: Caroline Eastwood/Alamy Stock Photo. Used with permission. French lilac is a perennial plant ...

Advice on lilacs, Scotch Broom, pruning olive and one special shrub. Mae asks: What is the difference between a Korean lilac and a French lilac? Answer: Syringa vulgaris, or common lilac, grows up ...

The best white is the sumptuous double-flowered ‘Madame Lemoine’, named after the wife of a renowned 19th-century French lilac breeder who introduced over 200 different lilac cultivars ...