Fertilized Community Garden

Today I used the granular Dr. Earth's fertilizer on the community garden bed.  I had a busy day of harvesting celeriac, lettuce, kale, carrots, 1 strawberry and my friend's turnips and bok choy.  The marigolds I recently planted are mostly  denuded of all foliage and some are further along and completely dead.  There must be some pest both at the community garden and at home that loves to eat marigolds.  This happened last year as well.  Aren't they supposed to be pest repellent?

Here is a picture of my friend T. with her monstrous kohlrabi.  It reminds me of the plant from Little Shop of Horrors!