22 Purple Robe Locust

Purple Robe Locust, Robinia Pseudoacacia 'Purple Robe'

This spring flowering tree has long droops of purple fragrant flowers. Thorns are present throughout the trunk and branches. This is a high maintenance and very susceptible to locust borer and must be sprayed regularly to prevent the insect from killing the tree. These trees also requires regular structural pruning to remove weak included branch attachments. It grows to a height of up to 30 feet and a spread of up to 25 feet. The city is no longer planting this tree as it is too high maintenance.