Removal of diseased foliage Put in plastic bags or heavy yard-waste bags Handle foliage in such a way as to minimizing shaking spores loose into the air Burn, bury or dispose of to local dump in garbage bag Burning is preferred. Some say can compost as heat will kill the spores - but I wouldn’t do so Promote leaf dryness by spacing plants well and avoiding sprinkler irrigation Rust needs moisture for about 4 hours Moisture trapped in clumps creates ideal environment Divide as needed to prevent crowding Drip Irrigation rather than sprinklers

Keep track of disease cycle in your yard Keep log of when rust appears in your yard Record rain events and temperature cycles in garden Is there a pattern of occurrence If you spray then what and when will target with best results If necessary use fungicides Will not make sick leaves better Lesions and damage will not go away Purpose of fungicides is to protect leaves or keep them from getting worse so must be applied as soon as rust appears Verify that label says that is will control “Puccinia” rust diseases

Rotate applications from different Groups so that fungi don’t become resistant Groups designations are made according to the active ingredients mode of action Group 3 -Systemic Bayleton, Strike Group 11 – Systemic Most effective– Most expensive Heritage, Insignia, Compass Group M – Contact Least effective – Most inexpensive M3 and M5 These products are the ones listed as most effective by the growers How to rotate If only use once or twice rotation not critical issue If you treat frequently you need to use at least two products and they must come from two different groups – 3, 11 or M

AHS – American Hemerocallis Society – Bulk of text content and gold dusting, snail and plant disease images Charles Milliron – Image of Mexican Explosion, Big Sis Betty and Olivia Cote Dave’s Garden – Image of thrip flower damage Glenn Ward – Images of Eller’s Garden and Gilded Butterfly

Hydro-Gardens – Spider Mite Image Stout Gardens – Image of Caribbean Whipped Cream Tinker’s Gardens Daylily Database – All flower images – Tinker’s Garden and/or it respective owner The Little Green Apple – Aphid Image

“Controlling Daylily Rust” by Patricia Crooks Henley, Ph.D. Region 2, Ohio Printed in the Fall 2008 issue of The Daylily Journal

Have members throughout the Valley area Meet every other month – starting in January Meet on Saturday mornings at 10:00 in the conference room at the Columbus Hospice on Moon Road Annual Membership is $10 per person, $12 for 2 person family and $4 for youth – First Meeting - Free Daylily Have plant shows and sales, auctions, outside speakers and tours of member and hybridizers’ gardens Offer informative presentations on Daylily care by society members