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Tree Fertilization

Many of the tree species, which have been planted in our desert are not well suited for our harsh soil conditions.  Therefore, they need annual supplemental Arizona tree fertilization.  To provide this, we “Root Feed” or inject nutrients at high pressure in a liquid form throughout the root zone where they are needed.

Ralph Spilsbury, founder and President of Tree Doctors Inc., holds a Ph.D. in plant science.  As a result of his frustration with the ineffectiveness of most fertilizers ability to correct the deficiencies so common to our area, he researched and developed the Arizona tree fertilizer blends which we use.

Benefits of Tree Doctors’ Root Feeding Formulation:

  1. Contains controlled release fertilizers for sustained feeding all season long
  2. Feeds organically, providing both energy rich carbon and nitrogen for increased microbial activity
  3. Reduces plant stress
  4. Promotes vigorous root growth
  5. Protects roots with non-burning, low salt index formulations
  6. Resists leaching
  7. Contains needed major and minor elements
  8. Improves disease resistance