I'm currently clearing a moderately shady spot which I reckon'd be perfect
for a display of about 60 foxgloves next year.

What's a reasonably economic way to get these plants? I'm not sure if it's
too late to sow seeds this year, and if it's not, then what do you do with
them over winter.

Dunno if this is just garden centres around Oxford, but small foxglove
plants bought in spring tend to cost 5 to 10 squid

thanks.