Around bottom of sundial, a shoot coming up in Spanish square (5)
I believe the answer is:
plaza
'spanish square' is the definition.
(I've seen this before)
'around bottom of sundial a shoot coming up' is the wordplay.
'around' indicates putting letters inside.
'bottom of' says to take the final letters.
'shoot' becomes 'zap' (I've seen this before**).
'coming up' shows that the letters should be reversed in order.
The final letter of 'sundial' is 'l'.
'a'+'zap'='azap'
'l' placed within 'azap' is 'azalp'.
'azalp' back-to-front is 'PLAZA'.
'in' acts as a link.
(Other definitions for plaza that I've seen before include "Public square, as in Spanish town" , "Public square, in Italy" , "The ____ Mayor is important in Madrid" , "Public square for pedestrians" , "Sp. square, market-place" .)