牛至又名止痢草,、土香薷,、小葉薄荷，為唇形科牛至屬多年生草本植物,。主要分布于地中海地區(qū)至中亞,、北非,、北美及我國(guó)大部分地區(qū)，生于海拔500-3 600 m的山坡,、路旁,、灌叢、草地,、林下,。牛至味辛、性涼,、無(wú)毒,，全草可入藥，具有清熱解表,、理氣化濕倒尿消腫之功效,。臨床用于預(yù)防流感治療黃疽、中暑,、發(fā)熱,、嘔吐、急性胃腸炎,、腹痛等癥,，其散寒解表功用勝于薄荷。美國(guó)農(nóng)業(yè)部的"植物化學(xué)和植物物種學(xué)"背景資料表明，牛至含有30多種抗菌化合物,，是一種潛在的天然抗生素和藥物生長(zhǎng)促進(jìn)劑,。（中國(guó)進(jìn)出口網(wǎng)）

Oregano is a perennial with rose-purple or white flowers and a taste reminiscent of thyme. Its taste is zesty and strong and is commonly used in Italian dishes. Oregano is a hardy plant and makes a good ground cover. Oregano loves the sun; ensure your placement has full, strong sun for strong flavor; some folks plant later in the season for assured warm weather. Allow oregano to grow to about 4 inches and then pinch or trim lightly to encourage a denser and bushier plant. For thin plants, plant 8 to 10 inches apart. The plants will grow 1 to 2 feet tall and spread about 18 inches.