Bastogne was among 628 cultivars reported as having been collected from four gardens in Japan in 1975:

Colour and Pigment Distribution in Ornamental Plants : V. Anthocyanin Distribution in Rose Cultivars. The Technical Bulletin of Faculty of Horticulture, Chiba University Vol.22(19750315) pp. 13-24.

The four gardens were:

Keisei Rose Institute, Chiba
Yatsu Park, Chiba
Kanagawa Prefectural Ofuna Botanical Garden
Jindai Plant Park, Tokyo