What is this caterpillar?

What is this caterpillar?

Observation - What is this caterpillar?. Description: Large caterpillar, appeared to be trying to burrow into the soil. Dark green and yellow. Thought it was a Mullein moth, but patterns don't appear to match.

Large caterpillar, appeared to be trying to burrow into the soil. Dark green and yellow. Thought it was a Mullein moth, but patterns don't appear to match.