You may try advertising in the AHS journal, some kind of small booklet/magazine the club publishes a few times a year. There are all sort of groups on facebook for gardening/daylilies, you might try advertising there. There are all sorts of magazines for farming, homesteading ect that you could probably take out an ad. First you need to decide what the property is worth, what you will take for it, if you want to use a realtor ect.