What does the cryptic crossword clue "Platform with exotic hyacinths last three plucked for floral decoration (10)" mean?

The wordplay uses a charade (building blocks). anagram of DAIS (synonym="DAIS") + HYACIN (synonym="HYACIN") = DAISYCHAIN The answer is DAISYCHAIN.

Platform with exotic hyacinths last three plucked for floral decoration (10)

Independent Cryptic #11686 | 25 Across | 2024-03-25 flower