I've been to bonsai a little less than 2 years and now I'm beginning to take care of them, too

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Here are some of my mistakes.
- I had a nice keshutshibo (less than 2 inches) ivy in a 1x1x1 inch pot. You guess it, right? Probably not. I carefully watered it 2-3 times a day and it did quite well, until I decided to give it some nutrients... 1/8 of the smallest dose suggested in the package, but still. Root burn due to over-feeding.
Lesson: 1. don't plant anything in such a small pot, 2. at least don't feed anything in such a small pot.
- My first bonsai was a garden centre juniper, which I styled into a literati. Looked nice until it's first spring. When the sun began to shine the tree transpired itself to death as the roots were still frozen.
Lesson: 1. don't style a tree immediately after purchase, if you buy it in june, 2. keep your trees in shade until the water in the soil has melt.
Zeb