LINKS

Shrubs (Acid Loving)

  1. Per 100 square feet of bed, broadcast evenly over mulch 1/2 lb. (1 cup) of 13-13-13 or equivalent fertilizer, preferably containing a slow release source of nitrogen, in early April. Repeat in mid-May and again in late Test soil again next autumn.
  2. Per 100 square feet of bed, broadcast evenly over mulch 3/4 lb. (1 1/2 cups) of 12-6-6 or equivalent fertilizer, preferably acid forming and containing a slow release source of nitrogen, in early April. Repeat in mid-May and again in late June. Also apply 1/2 lb. (1 cup) 0-46-0, superphosphate or similar per 100 square feet anytime. Test soil again next autumn.
  3. Per 100 square feet of bed, broadcast evenly over mulch 1/2 lb. (1 cup) of 0-46-0, superphosphate or similar plus 1/4 (1/2 cup) of 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde, or other slow release nitrogen fertilizer in early April. Repeat in late June. Test soil again next autumn.
  4. Per 100 square feet of bed, broadcast evenly over mulch 1/2 lb. (1 cup) of 18-6-12 or equivalent, preferably containing a slow release source of nitrogen, in early April. Repeat in mid-May and late Test soil again next autumn.
  5. Per 100 square feet of bed, broadcast evenly over mulch 3/4 lb. (1 1/2 cups) 12-6-6 or equivalent fertilizer, preferably acid-forming and containing a slow-release source of nitrogen, in early April. Repeat in mid-May and late June. Test soil again next autumn.
  6. Per 100 square feet of bed, broadcast evenly over mulch 1/2 lb. (1 cup) of 0-46-0, superphosphate or similar plus 1/4 (1/2 cup) of 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde, or other slow release nitrogen fertilizer in early April. Then in mid-May and late June, broadcast 3/4 lb. of 12-6-6 or equivalent fertilizer, preferably acid forming and containing a slow-release Test soil again next autumn.
  7. Per 100 square feet of bed, broadcast evenly over mulch 1/2 lb. (1 cup) of 12-6-6 fertilizer or equivalent, preferably acid forming and containing a slow release source of nitrogen, in early April. Repeat in late June. Test soil every two years in autumn.
  8. Per 100 square feet of bed, broadcast evenly over mulch 1/4 lb. (1/2 cup) of 0-46-0, superphosphate or similar, plus 1/4 (1/2 cup) of 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde, or other slow release nitrogen fertilizer in early April. Repeat in June. Test soil every two years in autumn.
  9. Per 100 square feet of bed, broadcast evenly over mulch 1/2 lb. (1 cup) of 16-0-16 or equivalent low- phosphorus fertilizer, in early Repeat in mid-May and late June. Test soil again next autumn.
  10. Per 100 square feet of bed, broadcast evenly over mulch 1/4 lb. (1/2 cup) of 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde, or other slow release nitrogen fertilizer in early April. Then in mid- May and again in late June, broadcast 1/2 lb. (1 cup) of 16-0-16 or equivalent amount of low phosphorus Test again next autumn.
  11. Per 100 square feet of bed, broadcast evenly over mulch 1/4 lb. (1/2 cup) of 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde, or other slow release nitrogen fertilizer in early April. Then in late June, broadcast 1/2 lb. (1 cup) of 16-0-16 or equivalent amount of low phosphorus fertilizer. Test soil every two years in autumn.
  12. Very high P & K levels indicate possible over fertilization recently. If plants are not stunted or showing leaf burn, broadcast evenly over mulch 1/4 lb. (1/2 cup) of slow release nitrogen fertilizer such as sulfur coated urea, nitroform, ureaformaldehyde, or equivalent per 100 square feet of bed in April.
  13. If soil pH is above 5.5, apply two-tenth (0.2) pound of elemental sulfur per 100 square feet (for medium-textured, silt-loam soils) for each one-tenth (1/10) unit the pH is above 5.5. Use 1/3 more sulfur for fine-textured (clay) soils or 1/3 less sulfur for course-textured (sandy) soils than the amount required for medium textured soils. When more than three (3.0) pounds of sulfur per 100 square feet is required, it would be advisable to split the application. Apply two-thirds of the recommended amount and after 2 or 3 months re-test the soil. If the pH has not been sufficiently reduced apply the remainder of the material.
  14. [Note 14 is used only when the magnesium test indicates a need for magnesium]. If lime is recommended, use dolomitic Where lime is not needed, use one-fourth cup Epsom Salts (magnesium sulfate) per 100 square feet.