I recently received a shimpaku juniper bonsai. As a gardener, I have a green thumb that I am sure is gangerine. I know I should be using a fertilizer, but what type should I use? Does this tree need an acid fertilizer? How do I keep it outdoors in winter when we usually have 4-6 feet of snow? Do I water it during the winter? As you can tell, I have admired Bonsai trees, but never thought I would be responsible for one.
Use a fert that has a balanced NPK [10-10-10...15-15-15 etc] Yes, It would appreciate an occasional dose of an acid fert.
Much much much less watering in winter.
I am running late so more later but start reading here:
There are some excellent articles here: Check out the ones on beginners, Watering, Soil and Winter Care. https://www.bonsai4me.com/Basics.html
See the stickys at the top of the forum for additional info and see [url=https://www.helpfulgardener.com/forum/viewtopic.php?t=3343]here[/url] for some bonsai inspiration.
You will find that winter is much less of a problem than you suspect