Cereoid-XXXXX schreef
No

Even if you moved to a planet where the years were only six month long,
apple trees would still only bloom once a year.

A prolonged flowering season in a mild climate is just that and not a
second crop of flowers.

D Z wrote

Would it be possible, as a quirk of nature, for a tree
to flower early in the year (spring), and then again in late summer?

+ + +
Yes

Magnolias often flower twice a year here,
first in spring then in late summer
PvR