 
                           Photo taken by juggzy_malone
TheGardenLady received this question from Liz on her “Caring for Marigolds” post.
I am growing marigolds in tall (3″) pots in a very sunny location of my backyard. In the pots I have also planted white flowering bacopa, ivy and a browny spikey grass (not sure of the name).  Everything in the pots were growing well for a few weeks until recently when I noticed that the bacopa stopped flowering and the foliage and flowers of the marigolds had turned into a daily meal for something. I’ve checked in the soil, and around the marigolds both in the day and in the evening but can ft locate any insects other than the one lonely earwig.  I have read that the only pests that will feast on marigolds are slugs but I can’t find any in/around my pots. Can you offer any information on what may be causing my frustrations???
You write that you created a mixed pot of plants that includes bacopa and marigolds. Was it your idea of putting these plants together? TheGardenLady would not recommend combining marigold and bacopa in one pot. My understanding is that bacopa will stop flowering with severe drying out. Bacopa likes part sun. But marigolds like full sun and don’t need as frequent watering.
Not knowing the kind of ivy you have or what the grass is that you have, I cannot tell you the proper culture for those two plants.