Ground Covers
- Per 100 square feet, broadcast evenly 1 1/4 lb. (2 1/2 cups) of 12-6-6 or equivalent fertilizer, preferably containing a slow release source of nitrogen. Application can be anytime during growing season but early spring is preferable. Irrigate thoroughly, making sure no fertilizer residue is left on Test soil again next autumn.
- Per 100 square feet, broadcast evenly 1/2 lb. (1 cup) of 0-46-0, superphosphate or similar plus 6 ounces (3/4 cup) 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde, or other slow release nitrogen Application can be anytime during growing season but early spring is preferable. Irrigate thoroughly, making sure no fertilizer residue is left on foliage. Test soil again next autumn.
- Per 100 square feet, broadcast evenly 3/4 lb. (1 1/2 cups) of 15-0-15 or 16-4-8 or equivalent low phosphorus fertilizer, preferably containing a slow release source of nitrogen. Application can be anytime during growing season, but early spring is preferable. Irrigate thoroughly, making sure no fertilizer residue is left on foliage. Test soil again next autumn.
- Per 100 square feet, broadcast evenly 6 ounces (3/4 cup) of 40-0-0 sulfur coated urea, nitroform, ureaformaldehyde or other slow release nitrogen fertilizer. Application can be made anytime during growing season but early spring is preferable. Irrigate thoroughly making sure no fertilizer residue is left on Test soil again in two to three years in autumn.
- If soil pH is above 6.0, apply to the following plants 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 6.0: Japanese Spruce and Periwinkle. Use 1/3 more sulfur for fine-textured (clay) soils or 1/3 less sulfur for coarse-textured (sandy) soils than the amount required for medium-textured When more than three (3.0) pounds of elemental sulfur per 100 square feet is required, it would be advisable to split the application. Apply two-thirds of the recommended rate and after about 3 months re-test the soil. If the pH has not been sufficiently reduced apply the remainder of the material.
- [Note 6 is used only when the magnesium test 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.