Indoor Lavender plants MUST be placed in a southern facing window. Lavender is commonly grown outdoors, and it usually doesn’t do well as a houseplant because it doesn’t receive adequate sunlight. Stick it in a window will full sun and watch it thrive.
**My lavender already resided in a souther facing window, and it was still looking saggy. I love this tip, but I’m hoping I can figure out how to save mine! (image/source)