When to plant shrubs

In autumn 2023, we planted two amelanchier bushes in Uldum in BOXofGREEN boxes, close to a row of similar, but traditionally planted bushes.
And the difference meets all expectations: The bushes in the BOXofGREEN planting boxes stand here a year later, with visibly stronger shoot growth and robust growth.  

Images of the amelanchier bushes with and without BOXofGREEN planting boxes July 2025