Primrose rhymes with:
ambrose, bellrose, ciros, farrow's, guinarou's, gyros, hasbro's, hydro's, melrose, microprose, montrose, overthrows, penrose, pharos, rockrose, tomorrow's, tomorrows, yoshihiro's
Primrose sounds like:
premark, premier's, premieres, premiers, primaries, primark, primerica, primerica's, primers, primroses