The macronutrients other than nitrogen (chemical symbol N), phosphorus (P), and potassium (K) needed by plants—namely, calcium (Ca), magnesium (Mg), and sulfur (S). See also
| Gardener's Dictionary: secondary nutrients |
The macronutrients other than nitrogen (chemical symbol N), phosphorus (P), and potassium (K) needed by plants—namely, calcium (Ca), magnesium (Mg), and sulfur (S). See also
| 5min Related Video: secondary nutrients |
| primary nutrients | |
| macronutrients | |
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![]() | Gardener's Dictionary. Taylor's Dictionary for Gardeners, by Frances Tenenbaum. Copyright © 1997 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more |