Joke doesn't work.

      This appeared here a year or three ago (unchecked) from some seeds I gathered. (From the extra here the year after Alice went) 
       I managed, with my customary skill & efficiency, to lose them;  I can't say how many years later 1-2-3 one popped up in a crack beside "The Wagon".
       It remained as one for 2-3 years. Today, I spotted two, as in "Go back my Lord, there's TWO of them."  -   closer inspection from the "other" side revealed three.
      Last year there was was an outbreak of one in a nearby Border.