Something flowery one man replanted to cover middle of bed (7)
I believe the answer is:
anemone
'something flowery' is the definition.
'one man replanted to cover middle of bed' is the wordplay.
'replanted' indicates anagramming the letters (letters get placed or planted in new positions).
'to cover' indicates putting letters inside.
'middle of' means to look at the middle letters.
The central letter of 'bed' is 'e'.
'one'+'man'='oneman'
'oneman' anagrammed gives 'anmone'.
'anmone' going around 'e' is 'ANEMONE'.
(Other definitions for anemone that I've seen before include "Name one strange flower" , "Kind of buttercup with white or coloured flowers" , "Woodland plant - marine polyps" , "Flowering plant - mean one (anag)" , "Plant with brightly coloured flowers - found also in sea" .)