Among the perennial herbs I have in the garden is thyme.
This bush was one of the first things I planted and has been there three years, although a month or two ago it was touch and go whether I got rid of it as it appeared to be getting past it’s use by date.

It had become very ‘sticky’ (all stems and no leaf), as it got older and it was increasingly hard to pick a nice bunch for chopping.
So, I took the shears to it very radically and it has bushed back beautifully. Maybe I’ll get another year or two out of it. It has occurred to me that thyme would be a very attractive small garden bush or pot specimen on a balcony. It hasn’t been affected by the frost, and it seems to be very drought tolerant, once it is established.