Black locust 'Bessoniana'

Bessoniana is generally regarded as a hardy plant, so it can be safe to leave outdoors for the majority of winter (although if in doubt, using a row cover is often a good idea). Bessoniana needs a soil ph of 6.1 to 7.8 (weakly acidic soil - weakly alkaline soil).

Bessoniana is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.