How do Plant Growth and Slow interact with each other?
If on spell-caster casts Plant Growth in an area and the other targets a creature with the Slow spell, what happens?
Supposing that the creature fails its saving throw against Slow would this mean that, while it is within the area affected by Plant Growth, its movement is two times, four times, or eight times slower?
I have got an inkling that the creature would only move 1 foot for every 8 feet of movement, but not sure is those two effects stack.
Thanks for your help with this.