Osiria

Where to plant. As a dramatic solo accent in borders in front of silver foliage; in collections of enthusiasts of unusual varieties; as a cutting shrub for bright bouquets. Not for mass plantings: the drama gets lost in a group.

Climate. USDA 7b+; in southern Ukraine it can grow in open ground, while in Central/Eastern Ukraine winter protection is essential. Sensitive to spring frosts, so it is advisable to remove the winter protection late. In midsummer heat the colour contrast weakens.

Care. Full sun, a well-ventilated site; constant prevention against black spot, powdery mildew and rust; feed 3 times per season; prune one third in spring; winter protection is essential in a continental climate.

Name. 'Osiria', from Osiris, the Egyptian god of resurrection and the underworld. Kordes chose this name for the image of 'fire and silver', a symbol of resurrection through death, like the dramatic contrast of fiery red and silvery night light in the bloom. A poetic German tradition of naming Hybrid Teas after mythological and epic figures (Schwarze Madonna, Black Magic, Black Baccara).

Breeding. Bred by Reimer Kordes (1922–1997, son of Wilhelm Kordes II) at W. Kordes' Söhne (Sparrieshoop, Germany). Introduced 1978. Parentage: 'Snowfire' × Unnamed Seedling. Commercially offered in France by Willemse France (1978), and in Australia by Roy H. Rumsey (1981). The Kordes code is not publicly released (various sources give KORmirror and KORsir, without confirmation).

Significance. A cult rose through its internet fame, spreading widely on social media and Pinterest for its dramatic contrast. Difficult agronomy: it is really hard to grow because of weak disease resistance and sensitivity to frost, so many buyers are disappointed. No official awards: AARS, ADR and RHS AGM were not given. Photos on social media are often oversaturated: the real contrast is more visible in cool weather and weakens in heat. A variety for experienced collectors who are ready for constant horticultural attention.