How many letters does the top answer for “forming one or more whorls (especially a whorl of leaves around a stem)” have?

The most common answer is verticillate (12 letters).

Crossword clue: forming one or more whorls (especially a whorl of leaves around a stem)

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

verticillate 12 letters wn-def

forming one or more whorls (especially a whorl of leaves around a stem)

whorled 7 letters wn-def

forming one or more whorls (especially a whorl of leaves around a stem)