I agree with Brad. This next year should be a great time to visit during the bloom season.
The TBIS Spring meeting in 2014 will be in Salem, OR May 22-23. Bus tour of Schreiner's, Keppel's, Mid-America, Vaughn gardens on 5/23 with auction of a variety of cultivars the evening of 5/23. Sat-Sun 5/24-25 is AIS Region 13 spring convention in Portland with tour of Aitken's and Chad Harris gardens on Sunday 5/24. Snowpeak is just south of Salem in Lebanon. I have visited Dee several times when I've been to the Salem area in past years during their peak bloom and plan to make the trek again this next spring. Also, Schreiner's has a big Memorial Day BBQ with live music and wine tasting from a local winery. A full 4-5 days of iris viewing and wishing gets the summer off to a great start.
Dennis