Lovage (Levisticum officinale). Want to grow celery but find it too difficult? Lovage is the plant for you. The flavor is like very strong celery. Just snip fresh leaves and add to salads, soups, stews or whatever strikes your fancy. Dry leaves retain their flavor so you can keep a jar full around for winter cooking. Perennial plants are large so give them room to grow. (5-6ft tall). Lovage is one of the first plants to appear in early spring.