Questions & Answers about Vinden blåser bladene ned.
The preterite (past) of blåse is blåste. Replace blåser with blåste to get:
Vinden blåste bladene ned
(“The wind blew the leaves down.”)
With separable-prefix verbs plus a noun object, the usual word order in a main clause is:
verb + object + particle
Hence Vinden blåser bladene ned. If you front the particle (blåser ned bladene), it’s still grammatically okay but puts extra emphasis on the direction (“down”).