Apium — 9 species

Apium is the genus of celery and its close relatives, including leaf celery, celeriac, and wild celery — cool-season biennials grown primarily for their edible stalks, roots, and leaves. They prefer consistently moist, fertile, well-drained soil and perform best in full sun, though they tolerate light afternoon shade in warmer climates. All Apium species, including Celery and Celeriac 'Prinz', are listed as non-toxic to cats and dogs by the ASPCA, making them a safe choice for pet-friendly kitchen gardens.