1.
constructed of wood, no artificial heat source, covered in plastic during the summer
2.
constructed of wood or steel, solar heated, electric cables steam or heated by natural material
3.
easy to move, less shock to plants, grown in sellable size container
4.
no staking, cooler roots in the summer, well-insulated in winter, easy to move
5.
grown directly in the native soil, bare plants are easy to handle; the soil must be well-drained
