Are gladiolus perennials?
I suppose it depends on where you live. Actually I believe they are classified as perennials. I live in the deep south, and my glads are already over a foot high. Not blooming yet, but the foliage is beautiful. Here in the south, it is not necessary for me to remove my glad bulbs in the winter. They come back every year. However, since the old glad corm (“bulb”) dies off and replaces itself with a new corm on top every year, the bulbs will work themselves to the surface after a few years. So, I dig up my glad bulbs every 3 years, divide them, remove any “babies” and replant the glads in February. If the ground freezes below a depth of an inch or two where you live, you should dig up your bulbs every year and store them in a cool dark place.