Replace the SLP file(s) of the same number in AoK's graphics.drs file with the one(s) in this package using either SLP Studio or some modpack installer (by Anish Mistry for example) downloadable from the "Market" depository of AoK Heaven. By installing the modified graphics you will get the following result:
http://ider.eco.hu/foliage1.jpg using gra02521.slp and gra02522.slp for an Autumn/Winter effect, while
http://ider.eco.hu/foliage2.jpg using gra02519.slp and gra02520.slp for a Spring/Summer effect.
All four original AoK "Flowers" patches ahd been reworked for the purpose, but you do not install all of them. Pleas feel free to pick any of the above mdifications and install it into any of the four available slots. The four files are: