I've been trying to find this plant FOREVER! FINALLY! This one is tough because you need to keep an eye on it as it's a rhizomatous spreader so keep it in check by thinning it out if it is happy. It has a gorgeous arch to its bloom, hence the name gooseneck. Reminds me a lot of Veronica but better. Likes full sun, can handle some shade, prefers well drained soil and good moisture. Cut back after flowering, and its herbaceous so it will die back to the ground when it goes dormant.

Height: 2-3ft tall

Width: 2-4ft wide

Spacing: 15-24"

1st Photo Courtesy of Fine Gardening.

2nd Photo Courtesy of Gardenia.net