The Royal Rosarians are looking for rose enthusiasts to enter their annual Rose Garden Contest. Gardeners who prize their rose gardens and plantings have until May 26 to enter.

The city’s ambassadors have sponsored the annual contest since 1938 to honor what they call the “queen of flowers” and to promote greater appreciation of growing roses, honor those citizens who help beautify the city through their rose growing efforts and to showcase the best amateur rose gardens and commercial plantings in the “City of Roses.”

There are many categories, from simple rose plantings to formal rose gardens, but all gardens must be within 20 miles of Pioneer Courthouse Square in downtown Portland. No garden club membership is required.

Contest rules define a rose garden as “an enclosure for displaying roses in a confined setting that does not include any other plant material of any kind.”

There are also divisions for rose plantings, which are plots “used for rose cultivation that would not otherwise constitute a rose garden.” These may include other plants. A planted curb parking strip, for example.

Some divisions require as few as 10 roses; others want 25 or more. Most divisions require past winners to wait two years before entering again. Applications must be postmarked by May 26. Gardeners may enter up to two divisions. There is no entry fee.

On-site judging takes place June 4;…