Also, I would vote borage over comfrey since it's an annual.
Fair
enough, comfrey is definitely something of a once-only choice! Despite this, it's so useful that I wouldn't want to do without it; I consider the very... persistent... nature of it to be a feature not a bug.
Conveniently, though borage is an annual, it readily self-seeds, so you have it as long as you want it, at least around here.
'Theoretically this level of creeping Orwellian dynamics should ramp up our awareness, but what happens instead is that each alert becomes less and less effective because we're incredibly stupid.' - Jerry Holkins