The absorbing things that come up in the garden? (7)
I believe the answer is:
suckers
'the absorbing things' is the definition.
Although both the answer and definition are plural nouns, I don't see how one could define the other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for suckers that I've seen before include "Shoots" , "Clinging organs" , "sitting ducks?" .)