It is considered an annual in zones 3-8 and a perennial in zones 9-11.
Mandevilla and Dipladenia are in the same family. However the Mandevillea are vining plants while the Dipladenia are shorter, bushier plants with more leathery leaves.
Dipladenia is native to South America. It is a tropical plant. It could be grown in a container and brought inside during the cold winters of zone 5.
Yes, I have one, but I do live in Spain.
Perhaps this plant is actually a Dipladenia, not a Mandevilla. The former is a basket plant, not a climber.
The amaranth is an annual.
An annual
The cucumber is a tropical perennial in zones 10 and warmer. In colder zones, it is grown as an annual.
Neither its open
annual
"Annual" is an adjective.
Annual.
annual