Plant in hospital Cynthia cultivated (8)
I believe the answer is:
hyacinth
'plant in' is the definition.
'hyacinth' can be an answer for 'plant' (I've seen this before). I'm not sure about the 'in' bit.
'hospital cynthia cultivated' is the wordplay.
'hospital' becomes 'h'.
'cultivated' indicates anagramming the letters.
'cynthia' with letters rearranged gives 'yacinth'.
'h'+'yacinth'='HYACINTH'
Can you help me to learn more?
(Other definitions for hyacinth that I've seen before include "Any hitch in the flower?" , "A bulb; any hitch? (anag.)" , "Highly scented flower from bulb" , "Flower of lily family" , "Fragrant plant of the lily family" .)