I live in N IL and am new to gardening and just planted a few iris' 2 falls ago and a few last fall. I found out I have iris borers in most of the plants. I removed the leaves and killed the borers which are small right now and none made it to the rhizomes. Is that enough? These are pictures of Breakers (blue) which took 2 years to bloom and Berry Fulfilling (kind of burgundy) which bloomed the first spring. Breakers is affected, Berry is not (it is in a different location). I just took these pictures. Dear Jean from 2 years ago is most affected and did not bloom this year, but she did last year. Do I need to do anything more aggressive?
Breakers
Berry Fulfilling
