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Poinsettia, Any

Interpretive Nutrient Levels for Plant Analysis

Poinsettia, Any


Low Normal High Excessive
Nitrogen (% DW) 3.50
4.00
6.01
7.30
Phosphorus (% DW) 0.15
0.30
0.61
0.90
Potassium (% DW) 1.00
1.50
3.51
4.00
Calcium (% DW) 0.50
1.00
1.75
9.99
Magnesium (% DW) 0.20
0.30
1.01
3.00
Sulfur (% DW) 0.05
0.10
0.31
1.00
Manganese (ppm DW) 40
60
301
650
Iron (ppm DW) 50
100
301
999
Copper (ppm DW) 1
2
11
200
Boron (ppm DW) 15
25
76
100
Zinc (ppm DW) 20
25
61
400