This is the 14077th most frequent German word.
gepflanzten
"Geplanzten" means "planted" (something that has been planted).
Here, 'gepflanzten' acts as a past participle describing the flowers that were planted as an adjective.
Die im Frühjahr gepflanzten Blumen blühten wunderschön.
The flowers planted in spring bloomed beautifully.
In this sentence, 'gepflanzten' is used as a descriptive adjective modifying the noun 'Bäume'.
Wir haben die frisch gepflanzten Bäume gut bewässert.
We watered the freshly planted trees well.
'Gepflanzten' here describes the herbs, indicating they have already been planted, serving as a past participle adjective.