This is the most reliably hardy redbud north of Z6. It is also sold as 'Northern Strain'.
This differs from the species on...Read Morely in its greater hardiness. It was developed at the University of Minnesota from trees of northern provenance. The greater hardiness is inherited in seed-grown offspring.
There are claims of hardiness into Z3b.
In the USA, most nursery stock of eastern redbud is of southern provenance, and often isn't reliably hardy north of Z6.
This is the most reliably hardy redbud north of Z6. It is also sold as 'Northern Strain'.
This differs from the species on...Read More