It reseeds, it’s tall, it’s got more leaves than flowers. Its flowers fall off as soon as the day warms. But it’s also a fantastic thing to watch as night deepens.
After sunset, the buds begin to swell. The sepals crack apart, then flip open. The petals emerge like popcorn, their motion apparent as you watch, although not as fast as popcorn. By night, the flowers are fully open, awaiting the heat of tomorrow to drop their petals and await the next night’s new flowers. As summer progresses, the plants grow taller and taller, their floewers moving ever skyward.
Hooker’s Evening Primrose is easy to grow in a spot with a bit of moisture. It’s a California native so it doesn’t need much moisture, just enough to keep the plant growing and the flowers coming. If things get too dry, it will simply stop growing and switch to seed production. The plants only live a couple of years, so seeds are how they maintain a presence in your garden.