We found one dictionary that defines the word yellow false indigo:

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1. yellow false indigo: Wiktionary

Definitions from Wiktionary (yellow false indigo) ▸ noun:  Synonym of wild indigo ▸ Words similar to yellow false indigo ▸ Usage examples for yellow false indigo ▸ Idioms related to yellow false indigo ▸ Wikipedia articles (New!) ▸ Words that often appear near yellow false indigo ▸ Rhymes of yellow false indigo ▸ Invented words related to yellow false indigo