How many letters does the top answer for “(botany) the arrangement of sepals and petals in a flower bud before it opens” have?

The most common answer is aestivation (11 letters).

Crossword clue: (botany) the arrangement of sepals and petals in a flower bud before it opens

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

aestivation 11 letters wn-def

(botany) the arrangement of sepals and petals in a flower bud before it opens

estivation 10 letters wn-def

(botany) the arrangement of sepals and petals in a flower bud before it opens