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Growth habit.

Scrophulariaceae

Bright-green ovate leaves, sessile on vertical stems bear golden yellow tubular flowers up to 2 inches long in spring and fall.

Plant Type: perennial

Plant Form or Habit: upright/vertical

Plant Use: In beds and borders, naturalized in moist habitats.

Propagation:

seed
division
stem cuttings

Flower Color:

yellow

Bloom Period:

late spring
early summer
late summer
early fall

Width: Minimum: 24 inches     Maximum: 32 inches

Foliage Texture: medium

USDA Hardiness Zone: 5

Water Requirements: average

Additional Comments: Grows best in cool, moist conditions. Supposedly hardy only to zones 8 or 7, it grows in full sun in our zone 5 plots.