It resulted from the cross of 'Large Sugar Prune' x 'Čačanska Lepotica' in 1980, named and released in 2004. The authors were: Dr. Dobrivoje Ogašanović, Dr. Milojko Ranković, Dr. Svetlana A. Paunović and Olga Mitrović, BSc.
The tree is moderately vigorous, the crown is rather dense, with strong scaffold branches. It primarily bears fruits on fruiting spurs, others are less common. Flower bud contains 1.83 flowers on average. The leaf is moderately large, quite smooth. The flower is medium-sized and well developed. It flowers 2−3 days after 'Stanley'. It is partly self-fertile. Moderate to good bearer, depending on the locality and season. It is practically resistant to Plum pox virus, but highly susceptible to fruit rot (Monilinia laxa Aderh et Ruhl.). Highly compatible with Myrobalan seedling rootstock.
The fruit is small to medium-large, 30 g on average. Dimensions: length - 35.5 mm, width -33.0 mm, thickness - 30.2 mm. Roundish to egg-shaped. The skin is rather thin, red, with a bloom. The flesh is golden yellow, exceptionally sweet. It contains from 22.6 to over 32 % soluble solids. The stone is medium-sized (0.99g). Dimensions: length - 20.9 mm, width - 12.3 mm, thickness - 7.0 mm. Stone is light brown.
It ripens about seven days after 'Stanley'. Good shipper.
'Mildora' is suitable for drying. It produces amber colored prune. It should be grown in localities with no danger of fruit rot (Monilinia spp.) and late frosts.