How large a ball of earth should be included?
Naturally the size of the ball depends upon the species or variety, as well as on the age or size of the plant. Epiphytic rhododendrons such as the Maddeniis have weak, limited root systems whereas the more common kinds have a mass of fine, fibrous roots which extend to about the circumference of the foliage mass. In wet, heavy clays, root systems are ordinarily less extensive than in loose, sandy loams. Generally, large, old plants can be moved successfully with a ball of earth about three feet in diameter. In the Rhododendron Dell, we are preparing to move plants five or six feet high and each will have a large ball of earth. Ordinarily, the ball should include most of the root system and should be as large as can be handled readily. Each individual specimen is likely to require investigation as to the extent of its root system. One should begin digging at a fair distance from the trunk and then work inward until you begin to encounter masses of roots. (Hudson) What type of roots do
