Why is it that people recommend planting hardy gladiolus in the spring?

If they are hardy and don't need to be lifted for winter.|||Typical planting time for glads is spring, as in many regions the winter is cold enough to kill the bulbs. While hardy glads have a better chance of overwintering, it's not guaranteed, and planting them as new in cold wet earth could just lead to rot, without a single bloom.|||Hardy means little maintenance.


Perenniel means cans live thru winter; annuals can't.


Perhaps you have hardy annuals.