Greek mountain oregano
Origanum vulgare subsp. hirtum (Greek oregano) is related to the herb marjoram, oregano also being known as wild marjoram. It is a perennial, although it is grown as an annual in colder climates, as it often does not survive the winter months. It grows to 20 inches, with purple flowers and spade-shaped, olive-green leaves.
Oreganum Vulgarius (mountain Greek). Sun. Perennial. Height: 10-12” Can Spread up to 24” wide. Also known as Wild Oregano, this oregano is referred to as Mountain Greek because the seeds come from the mountains of Greece. Has a very strong and spicy hot flavor.
Formerly listed botanically as Origanum heracleoticum, Greek Oregano is one very spicy herb. It’s parent Origanum vulgaris, a culinary zero, is often commercially grown and offered as Greek Oregano. O. vulgaris, often known as Wild Marjoram, is an extremely invasive plant with a pink flower. Origanum vulgaris hirtum is the true Greek Oregano with flavor so intense it numbs the end of your tongue when fresh, and like all culinary oreganos, the flower of Greek Oregano is white.