You know, I did think once or twice that the shape of the plant was quite stylized but I never specifically thought menorah because so many herbal drawings are stylized (and have a flattened look).
But the way the roots are drawn does look referential, so perhaps it is a menorah.
Here's one from a Jewish tombstone from Roman times which is rather plant-like, and a mosaic with similar themes:
I don't know if it has any significance, but I once recorded the number of petals and leaves and got the following numbers:
Petals: If the amber part is separate, there are 14, if they are attached to the semicircle on top, there are 10. I can't tell if the blue on the right is a shadow or a petal. It's possible there are four flowers and the number of petals is less important.
Leaves (with matching stems):
9 8
9 8
9 7
Legs - 9... I think. Two have hatching but it seems to be for shading, not a separate "root". The shape of it reminds me of a round temple with arches.