Oerprei (𝐴𝑙𝑙𝑖𝑢𝑚 𝑎𝑚𝑝𝑒𝑙𝑜𝑝𝑟𝑎𝑠𝑢𝑚 𝑣𝑎𝑟. ℎ𝑜𝑙𝑚𝑒𝑛𝑠𝑒) is a type of traditional perpetual leek from the Netherlands.

In Dutch, “Oer” means: primitive; and “prei”: leek.

The plants have keeled, smooth and stiff foliage, with an erect habit, glaucous gray in color, and remaining perfectly healthy.

The pseudo-stems are almost similar in size to leeks of the 𝑝𝑜𝑟𝑟𝑢𝑚 subspecies since they can reach 3 cm in diameter and 23 cm in length.

In addition, this horticultural group has a high rate of vegetative multiplication. A well-developed bulb are composed of 15 to 20 sessile cloves, of variable sizes, without tunic. They are arranged in a staggered pattern, giving the bulb an artichoke appearance.

Their flowering is very late, in mid-July. Their inflorescences are composed of purple and white flowers, with purple pedicels and anthers.

They have perfect sexual fertility.