Polemonium flavum is a perennial in the Polemoniaceae that produces yellow flowers. It flowers from May to July and prefers well-drained, sandy or rocky soil in full sun or partial shade on south-facing, exposed sites. Native to western North America, Yellow Jacob's Ladder suits rock and alpine gardens and the front of borders.

Yellow Jacob's Ladder (Polemonium flavum) is a perennial with yellow blooms from May to July, suited to south-facing rock and alpine gardens in.

Polemonium, commonly called Jacob's ladders or Jacob's-ladders, is a genus of between 25 and 40 species of flowering plants in the family Polemoniaceae, native to cool temperate to arctic regions of the Northern Hemisphere. One species, Polemonium micranthum, also occurs in the southern Andes in South America.

Polemonium flavum

Yellow Jacob's Ladder | Polemonium flavum

Polemonium kiushianum is a species of Polemonium in the family Polemoniaceae, known within the Jacob's ladder group. It produces its main flowering display in the UK from May to July. The plant is valued for that seasonal display and is treated by gardeners as a flowering perennial. Gardeners often compare its habits and timing with other Polemonium species when planning beds.

Polemonium kiushianum flowers in the UK from May to July and belongs to the Polemoniaceae family.