Creche is the answer.
I believe the explanation to be as follows:
Soak refers to a drunk and pungent-leved plant is cress.
From a drunk the word for cress would emerge as creche.
Can't take full credit for the explanation. In an earlier posting I came up with the idea of cress for the pungent-leaved plant and Telberts42 came up with drunk for soak - so a joint effort.
I'll go along with Netkey. And if that's not the explanation and the answer, well, it deserves to be! Gen2 and I seem to have been led halfway up the garden (nursery garden....?) path towards "orache" as a possible alternative but are now confident with "creche".
Grudging credit to Enigmatist for a real puzzler and for the pretty play with his aitches.
Not sure that I go along with the congratulations bit - when the cryptic part of the clues are so obscure it just reduces it to a glorified "Quick Crossword". Surely when you've got the correct answer it should be fairly obvious that you've done so? I still don't get the cryptic part of many of them eg GOSSAMER, HIFI etc; and "BR" as an abbreviation of bedroom!