Ideally no, however, there are a number of caveats
A) Covid-19, Council's were given the power to delegate substantial powers to the Clerk for decision making and spending.
B) Most standing orders allow the Clerk to make purchases upto £500 with retrospective approval on the basis of immediate need. Larger councils may have larger amounts.
But ideally replacement spending e.g flower pots should, ideally, be planned spending