Experts and BHG readers answer.
GROWING TIPS FOR CURLY WILLOW
Thanks for writing. Curly willow grows best in moist, well-drained soil in full sun. Because it grows so fast, it's wood is pretty weak, so it also benefits from a spot sheltered from strong winds.
Other than that, there's not much this easy-growing tree needs to grow.
---Justin, Senior Garden Editor, BHG.com