What was the (a) total for each specified year and (b) grand total amount spent by his department on (i) flowers and (ii) pot plants (aa) in the (aaa) 2009-10, (bbb) 2010-11, (ccc) 2011-12, (ddd) 2012-13 and (eee) 2013-14 financial years and (bb) since 1 April 2014?