LINKS

Shade Trees

  1. Mature shade trees located in a well-fertilized lawn and showing adequate growth and color need no extra fertilization. Otherwise use half the amount recommended for younger trees. For fast growth of younger trees fertilize twice annually until desired size is reached. Measure area under and 25 percent beyond spread of branches. Broadcast fourteen pounds 12-6-6 or equivalent per 1000 square Irrigate immediately with sufficient water to carry into root zone. Make applications in late November and again in early spring or up until late June. Test soil again in two years during autumn. Keep grass and weeds away from trunk.
  2. Mature shade trees located in a well-fertilized lawn and showing adequate growth and color should need no extra Otherwise use half the amount recommended for younger trees. For fast growth of young trees fertilize twice annually until desired size is reached. Measure area under and 25 percent beyond spread of branches. Broadcast 6 lbs. 34-0-0, ammonium nitrate or similar and 4 lbs. 0-46-0, superphosphate or similar per 1000 square feet in late November. Irrigate immediately with sufficient water to carry into root zone. Repeat the 6 lbs. of 34-0-0, ammonium nitrate or similar in early spring or up until late June. Test soil again in two years. Keep grass and weeds away from trunk.
  3. Mature shade trees located in a well-fertilized lawn and showing adequate growth and color should need no extra fertilization. Otherwise use half the amount recommended for younger trees. For fast growth of younger trees fertilize twice annually until desired size is reached. Measure area under and 25 percent beyond spread of Broadcast 6 lbs. 34-0-0, ammonium nitrate or similar per 1000 square feet. Irrigate immediately with sufficient water to carry into root zone. Make applications in late November and again in early spring or up until late June. Test soil again in two years during autumn. Keep grass and weeds away from trunk.
  4. Mature shade trees located in a well-fertilized lawn and showing adequate growth and color should need no extra Otherwise use half the amount recommended for younger trees. For fast growth of younger trees, fertilize twice annually until desired size is reached. Measure area under and 25 percent beyond spread of branches. Broadcast 12 lbs. of 18-6-12 or other equivalent low or no phosphorus fertilizer per 1000 square feet. Irrigate immediately with sufficient water to carry into root zone. Make application in late November and again in early spring or up until late June. Test soil again in two years in autumn. Keep grass and weeds away from trunk.
  5. [Note 5 is used only when the test for magnesium indicates a need for magnesium] If lime is recommended, use dolomitic limestone. Where lime is not needed, use one-fourth cup Epsom Salts (magnesium sulfate) per 100 square feet.