Hi Michelle, thanks for the question.

Ants on your plants can indicate your plant has aphids. You have picked up and a common practice of ants. They feed on the honeydew of aphids and in return protect the aphids. Check out the attached picture that shows the aphids on your plant. Since aphids can cause problems like distortion and sooty mold it, is a good idea to get them under control.  Small quantities can be wiped off, larger quantities can be knocked off with a stiff spray of water. An invasion may require insecticidal soap, or neem oil sprays. Check out the following links:

https://hort.extension.wisc.edu/articles/aphids-2/#:~:text=Plant%20phloem%20has,eggs%20of%20some.

Aphids in home yards and gardens | UMN Extension

I hope this is helpful.