Get a suitable container with a hole in the bottom, for example a normal flower pot. There are many types of containers that you can use, pick one out that is good for you. Add a lining of rocks to the bottom then add rich potting soil on top. This is to allow the roots to grow and to allow drainage. Ours come with a hand made pot.
Place bonsai tree in the center with some of the trunk still sticking out of the top of the pot. Remove any dirt that is still attached to the roots, ie break it off. Trim back any excess roots. Fill in with potting soil, pack lightly. Add moss and rocks to the top making a mound.
Place in sunny area, but NOT direct sunlight. Your Bonsai Tree does like the sunny areas, but the direct sun can kill it and dry up the leaves. Many people kill thier bonsai by placing the tree in the sun right after watering. All the water goes to the leaves and the sun dries out the leaves and the tree. Not good. Trees like the outdoors, place outside as much as possible. It is alright to leave out in the cold, just don't shock the tree by going hot - cold - hot, etc.
Add water when the roots are slightly moist, usually once a day for mine. Stick a finger into the pot to find out if it needs watering. Also Do not over water, the tree trunk becomes rather moist and dies. If water runs out the bottom then you gave it too much water.
If desired you can use a fertilizer solution and follow the instructions.
The meaning of the bonsai tree. The basics of bonsai is to take something pretty and keep it minature keeping the best traits. This is a life long journey and is for the someone that is willing to get one on one with nature. It is a healing process for you and the tree.
I have not done enough research to find out if a bonsai can be saved. I would assume it would depend upon why the tree was dying first.
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