Hi kitbag,

Google "well pumps" and you will get all the info you need. Types, cost and science of pumps. The important info is the height in feet from the pump to the elevation it has to push the water. Next is amount of flow in gpm or gph you will need for your gardening. Distance to garden is also important in determining the friction loss (in feet of head)but if it is not long can be almost ignored as long as your pipe diameter is big enough. The more distance to push the bigger the diameter of the pipe system. Good luck
Aloha.