"Willower" is spelled with a double "l" to indicate that the stress falls on the second syllable, "low." The IPA phonetic transcription for "willower" is /ˈwɪl.oʊ.ər/. The first syllable, "wil," is pronounced with a short "i" sound, followed by the stressed second syllable, "low," which is pronounced with a long "o" sound. The final syllable, "er," is pronounced with a schwa sound, represented by the upside-down "e" in the transcription. Overall, the IPA transcription helps to clarify the spelling of this word and how it should be pronounced.