monkeyflower
This monkeyflower opens pale yellow-ivory and fades to white. It's a cross between the lovely but cold tender White Verity hybrid and Mimulus bifidus from Bowman Lake in the Sierra Nevada (thanks to Ted Kipping). It has proved long lived in both Fulton and Sebastopol. It has the useful characteristic of sprouting new growth from the base so that old growth can be pruned away. Best with light shade and good drainage. Water occasionally for best blooms. The flowers provide nectar for hummingbirds and butterflies.