'Reine Claude d'Althan' is a fairly vigorously growing plum tree with a slightly jagged, round, semi-open crown of 4-6 m in height. The stem branches are relatively long, making the crown slightly more open. The tree flowers around the end of April-early May with lightly scented, white blossoms. The flowers of 'Reine Claude d'Althan' are not self-pollinating, which means that a plum tree of another variety should always be planted in the vicinity. Preferably, 'Belle de Louvain', 'Opal' or 'Reine Claude d'Oullins' are used for this purpose. The plums of 'Reine Claude d'Althan' are medium-sized, round and red-purple in colour. The flesh is golden yellow, very juicy and tastefully sweet. The plums are ready for picking around the end of August-early September. They are very suitable for direct consumption or use in pies or purée.
'Reine Claude d'Althan' was found in 1867 by the gardener of the Hungarian Count Joseph d'Althan. Hardiness zone 6.
Prunus domestica 'Reine Claude d'Althan' môže dorastať do výšky 6-8 m v závislosti od podmienok stanovišťa a klímy.
Prunus domestica 'Reine Claude d'Althan' rastie priemerne rastúci a môže dorastať do výšky 6-8 m v závislosti od podmienok stanovišťa a klímy.
Správny čas na výsadbu stromu je mimo vegetačné obdobie. V strednej Európe môže byť Prunus domestica 'Reine Claude d'Althan' so zemným balom vysadený od polovice novembra do konca apríla, avšak závisí to veľmi od klimatických podmienok a druhu stromu.
Prunus domestica 'Reine Claude d'Althan' kvitne v apríl, máj.