Paris quadrifolia, the herb Paris or true lover's knot, is a species of flowering plant that lives in damp and shady places, especially old established woods and stream banks.
P. quadrifolia is in decline in Europe due to loss of habitat. In Iceland, for example, it is on the red list.

P. quadrifolia is a perennial herbaceous plant that is 25 to 40 cm (10 to 15.5 in) tall. It may have 3-8 leaves but typically there are 4-5 leaves. The flowers are wispy and inconspicuous.
The plant flowers during the months of June and July. It has a solitary flower with four narrow greenish filiform (threadlike) petals, four green petaloid sepals, eight golden yellow stamens, and a round purple to red ovary. The flower is borne above a single whorl of four leaves.

Each plant produces at most one blueberry-like berry, which is poisonous, as are other plant tissues. Poisonings are rare because the plant's solitary berry has a repulsive taste.

Type: Hardy perennial

Hardiness zones: 5-9

Location: Shade or part shade

Height: 10-15", 25-40cm

Seeds per packet: 10