It reminds me of when they put the central reservations in along the aqua park road.
Bedded down two best rows of kerbstones with soil placed in between - with just enough space to fit Palm trees along at regular intervals.
Except when they brought the trees they realised that the roots are about twice as wide as the trunk, and they had to break out both lengths of kerbstones to get the trees in, then fix the kerbstones back in.