How Long Do Gladiolus Stay In Bloom? Live In Zone 5

Question

I’m hardening them off now.

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Answer 1

They usually last between 1 and 2 weeks. You can do what is called "succession planting", where you plant them every 2 weeks or so. That way you can guarantee blooms for awhile.

https://www.gardeningknowhow.com/ornamental/bulbs/gladiola/care-of-gladiolas-how-to-grow-gladiolas-in-your-garden.htm

https://www.gardeningknowhow.com/edible/vegetables/vgen/succession-planting-garden.htm