Plant from Austria bloomed regularly (4)
I believe the answer is:
aloe
'plant' is the definition.
(aloe is a kind of plant)
'austria bloomed regularly' is the wordplay.
'austria' becomes 'a'.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'bloomed' are 'loe'.
'a'+'loe'='ALOE'
'from' is the link.
(Other definitions for aloe that I've seen before include "Succulent plant (4) 5532" , "shrub" , "Flower, maybe vera" , "Plant source of purgative drug" , "O, ale with bitter plant" .)