Gladiolus Leaves turning yellow, Help!!

[Lucecita]

I am new at gardening. I planted some gladiolus and they were fine but now the leaves are turning yellow. What can I do?

 

[johnny canoe]

I am assuming that the pot has good drainage and that you keep the soil from drying out but not water logged.
What are you fertilizing with? Glads are heavy feeders, especially must be regularly fertilized if grown in containers. If you haven't been fertilizing, an all purpose 20-20-20 every week will give you healthy plants. (plant prod 20-20-20 is the product I use for all my containers)

 

[Lucecita]

Hi johnny, I'm using worm castings, but I'm going to try with the fertilizer you suggested. Thank you.