Oat (Avena Sativa) is an annual herbaceous plant up to 1,5 meters high. The root is fibrous, the stem looks like a straw; it diameter is up to 6 mm. The root has 2-4 bare nodes. Rough linear green leaves are located on the stem. The length of each of them is 20-45 cm, the width in most cases does not exceed 8-30 mm. The flowering of Oats begins in June and lasts until July-August. The flowers are small, bisexual, collected 2-3 pieces in spikelets, which in turn form a spreading panicle up to 25 cm long. Avena Sativa fruit is a caryopsis surrounded by scales.