Gladiolus
Q.

why are my glads not growing?

Zone 04976 skowhegan ME zone 5 | Anonymous added on August 21, 2019 | Answered

I have a medium size garden with tulips growing so, after they bloom, I plant my glads. The first few years i did this they were wonderful but the last couple of years not so much.  I planted over 100 and I may get half that many flowers. I even bought some new bulbs this year --  my flowers are small and not many of them.

A.
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GKH_Susan
Certified GKH Gardening Expert
Answered on August 22, 2019

Gladiola are not hardy in zone 5. (hardy in zones 8-11) In zones 6 and 7 they return if mulched heavily. So that might account for many of your losses. Is your soil well-drained? If not, the corms may have rotted. Are they in a sunny location? They may be overcrowded.

This fall, try digging up the corms and overwintering the ones that look healthy. Replant in spring with fertilizer added to planting trnch. Instructions are below:

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

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