Sweet cherry

Variety: Irena (S)

Species: Prunus avium


Breeder, Place Blazek, Holovousy, Czech Republic
Intellectual property Artevos, Germany
Parents Kordia x M. Reward
Crossing number HL 13 822
Property rights registered for EU plant variety rights


Blooming date late
Fertility self-sterile
S-allele, sterility group S4 S6, group 17
Pollinator Carmen (S), Early Korvik (S), PAPILLON ™ Pillangó (S), Walter (S), Klara (S), Kordia, STARDUST ™ 13 N 07-70 (S), Rubin, Henriette (S), Areko (S), KIR VULCANO ™ 16 A (S), Regina, KIR LAMOUR ™ KSG 03 A (S), CERASINA ™ Final 12.1 (S)


Ripening time late, 7. cherry week
Scale, shape medium to large, 27-30 mm, 11-13 g, heart-shaped with slight shoulders, long to very long stalk
Colour dark to black red, very shiny
Fruit flesh dark to black red, medium firm, Durofel pressure 25: 70-75, firm skin, soft flesh, juicy
Taste emphasized acidity just before maturity, at full maturity mild taste with balanced acidity
Cracking sensitivity very low to low, tends to crack only around the stalk cavity at full maturity after heavy rainfall


Vigour weak to medium strong, strong central leader, weak lateral branches, at mature stage spreading to pendulous, very good branching, thorough pruning of pendulous bearing wood necessary, healthy and dark green foliage
Crop load high to very high, fruits are hanging very densely without clusters, good picking rate because of the long stalks


This shortly before 'Regina' ripening cherry yields well from the beginning. When overcropping the flavour and firmness dissipates. The acid content of the fruits determines the possible harvest date.

Irena (S) is well suited as a pollinator for 'Regina'.


gräb gbr gehölze und obstbau | bassenheimer straße 49 | d-56220 kettig | tel.: +49 (0)2637 - 940 173 | fax: +49 (0)2637 - 940 174 | mail: info(at)graeb.com