I've searched for more information about this particular motif but can't find any.
Obviously it can be thought of as a fecundity/fertility symbol, but apart from that, what is it's origin? Are there any examples of other gods having vegetal crowns? Was it inspired by the Modius of the Egyptian goddess Mut? Is there a specific vegetable that is depicted (in the same way that the Acanthus and Palmette inspired certain designs)? Are there examples of pre- or post-Phoenician gods having actual vegetal crowns (and not merely other Modius like that worn by Serapis)?
- Vegetal Crown is a term I've never heard of before and came across in the article "Gods, Masks, and Monstra" by Matthew M. McCarty, in the book "Beyond Boundaries: Connecting Visual Cultures in the Provinces of Ancient Rome", pg. 270