Research Sources

Websites

Books

  • Michael D. Smith: The Ortho Problem Solver
  • Michael Dirr: Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses.
  • Geoffrey Burnie: Encyclopedia of Container Gardening
  • P. Allen Smith: Container Gardens
  • American Horticultural Society's gardening books and references

Plant Hardiness Zone Map