This is definitely one of our favorite peony varieties! Festiva has large, white, sweetly fragrant flowers make a big impact in the late spring to early summer garden. Double Peony Festiva Maxima grows 30-36" tall and has glossy, deep green foliage. This very low-care, high-performance perennial is a standout as a focal point in perennial beds, for hedges or in a spot of its own. Peonies perform best when planted in full sun to partial shade. Deer tend to avoid.  As beautiful as they may be, the peony plant contains paeonol, which is toxic to dogs and can cause illness if ingested.