Peony 'Bartzella' (Roger F. Anderson, Fort Atkinson, Wisconsin, 1986) is an intersectional or Itoh hybrid. In this case a white lactiflora double crossed with a Reath hybrid tree peony. A good sized plant at almost 3 feet tall with double, fragrant, 6-8", lemon yellow flowers with red flares and white-tipped carpels. Dark green foliage with large deeply cut leaves. Awarded the APS Gold Metal 2006. One of the most popular Itoh hybrids.