luumupuu

Luumuupuu is the Estonian term for the plum tree, referring to trees in the genus Prunus cultivated for plums. The principal cultivated species are Prunus domestica (European plum) and Prunus salicina (Japanese plum) and their hybrids. The luumupuu is a deciduous tree that commonly reaches 6–10 meters in height, with a broad, rounded crown. Leaves are oval, 2–6 cm long, with fine serrations. In spring, the tree bears clusters of white to pale pink flowers, which are attractive to pollinators.

Fruit is a drupe that varies in size and color by cultivar, typically yellow, red, or purple. The flesh is sweet to tart, and a single stone (pit) lies in the center. Ripening occurs in late summer; some varieties fruit earlier or later. While many plums are self-fertile, cross-pollination from another plum tree can improve yields.

Cultivation: luumupuu prefers well-drained soil and full sun. It tolerates cold temperate climates but frosts during bloom can reduce yields. Pruning in winter helps maintain structure and productivity. Most trees are grafted onto rootstocks to control size and improve vigor and disease resistance. Pests and diseases include plum curculio, brown rot, leaf curl, and aphids; management often relies on monitoring and integrated pest approaches.

Uses: fruits are consumed fresh, canned, or processed into jams, jellies, desserts, or dried as prunes. The tree is also valued for ornamental spring blossoms and as a nectar source for pollinators.

Etymology: luumupuu simply means plum tree in Estonian (luum = plum, puu = tree).