Hey everyone, I was wondering if anyone had some tips on how to increase the foliage color on shimpakus. I have 5 shimpakus and they are a lifeless green. I am guessing you all will tell me fertilizer of some sort, but what type, since I already feed all my trees with an organic rape seed cake bonsai fertilizer. I am really looking for something that will make my shimpaku a vibrant green. Thanks for your help.