All the plants look very healthy Chris and Greg! Keep up the good work.
When we did the Dalton project we found that 'Aymon Correvon' = 'Purdy''s 90-1'= 'Engle's 13-2'. Helen thought she saw some subtle differences between the three and the other two could have been seedlings of 'Aymon Correvon' as both Purdy and Engle obtained stock from Correvon or Sanford (who imported all of the Correvon plants). I tried for years to get seed from these plants but not a one on either 'Purtdy's 90-1' or 'Engle's 13-2'. My clump of 'Aymon Correvon' should have some blooming plants this year to try yet again.
Kevin