Pinata Lavender. Sometimes called Jagged Lavender or Fern Leaf Lavender. This plant cannot survive freezing temperatures. It grows quickly and makes an excellent annual. The plant grows to 2 feet and the flower stems to 2-3 feet. The flowers continue to bloom through October. Lavender Pinnata sets itself apart by its fern-like, creamy sage-gray foliage, which is finely toothed like a comb. It is attractive to birds, butterflies, and bees. Flowers are fragrant.