You posted this more than once and some replies were lost. Please only post once. However, the replies were:
1 A box containing a number of cans or bottles of a product called, or known as, Mums.
2 The Heights is the name of an area and plush means that it is a wealthy one.
"Mums" sounds to me like a trade name - no doubt for something expensive.
The Heights [misplaced apostrophe] is a posh neighbourhood - possibly a particular one such as Washington Heights, Manhattan - though there are many others.It may be Mumm's champagne.
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