Yes. Heather is a perennial plant.
it is perennial shrub
Mexican heather is typically considered an annual in USDA Zone 7. While it can sometimes survive as a perennial in milder winters, it's generally treated as an annual in colder climates. If you're looking for a perennial groundcover for Zone 7, there are many other options available that are better suited to the climate.
It is a perennial plant.
Asparagus is a perennial vegetable plant.
Yes orchids are perennial.
perennial
A tender perennial is a perennial plant that is not hardy in cold climates.
Lavender is a shrub and is therefore perennial.
I believe that Heather the plant came first because the flowering Heather plant is quite beautiful and with the research I've done, it seems the name Heather is derived from the plant instead of visa versa.
Iris is a perennial plant.
there are perennial and annual avocados,so it means it can be both.
A Weeping Willow is a tree so it is perennial.