quarantine: how far from my other plants?
I got two beautiful Calatheas from my local Lowes yesterday. I want to keep them away from my current plants for a couple of weeks in case any pests show up. How far away can things like spider mites, scale and other common houseplant pests travel? Is it just a matter of the plants not touching the others or the new ones not standing above the old ones where mites may fall - or do they need to be further apart like a different table in the room, or a different room?