I know why. It's to keep the neighbourhood WhatsApp group spicy innit.It was discussed here a couple of threads ago why as a cook and food writer who was all about frugal eating she never even looked into growing her own herbs and veg. What with that massive garden - so poor! Anyway now what a coinkydink she has decided she will.
Not quite sure why they have to be grown on the driveway rather than the garden - but baby steps.