Crowded wards need rearranging to take me in (7)
I believe the answer is:
swarmed
'crowded wards need' is the definition.
'swarmed' can be an answer for 'crowded' (swarming is a kind of crowding). I am unsure of the 'wards need' bit.
'rearranging to take me in' is the wordplay.
'rearranging' becomes 'swad' (I can't justify this - if you can you should give a lot more credence to this answer).
'to take' becomes 'r' (abbreviation for 'recipe', Latin for 'take').
'in' indicates putting letters inside.
'r'+'me'='rme'
'swad' placed around 'rme' is 'SWARMED'.
Can you help me to learn more?
(Other definitions for swarmed that I've seen before include "(Of bees) flew en masse" , "Teemed (like bees)" , "crowded" .)