Osmocote Plus 15-9-12 is recommended when growing a wide variety of
plants. Standard release pattern delivers a steady stream of nutrition
throughout the growth cycle.
Guaranteed Analysis
Total Nitrogen (N): 15%
Nitrate nitrogen (N-NO3): 6.6%
Ammoniacal nitrogen (N-NH4): 8.4%
Phosphorus Pentoxide (P2O5): 9%
Potassium Oxide (K2O): 12%
Magnesium (Mg): 1.3% (Water soluble: 0.8%)
Sulfur (S): 5.9%
Boron (B): 0.02%
Copper (Cu): 0.05% (Water soluble: 0.05%)
Iron (Fe): 0.46% (Water soluble: 0.09%; Iron EDTA: 0.006%)
Manganese (Mn): 0.06% (Water soluble: 0.02%)
Molybdenum (Mo): 0.02%
Zinc (Zn): 0.05% (Water soluble: 0.011%)
Benefits
Patterned Release Technology meets specific feeding cycles with unmatched consistency, efficiency, and safety
Can be incorporated into growing media or surface applied in the container
Use alone or in combination with a water-soluble fertilizer
Safe for sensitive crops
Suitable for use with dibbling equipment
Application Rates
Longevity at Average Media Temperature
60°F (15°C)
70°F (21°C)
80°F (26°C)
90°F (32°C)
4-5 months
3-4 months
2-3 months
1-2 months
Surface Application (Grams)
Common Container Volumes
Approx. Containers per Cubic Yard*
Low
Med
High
6" azalea / hibiscus (1.5 qt.)
539
3
7
10
6" standard (1.75 qt.)
462
3
8
12
6.5" azalea (1.8 qt.)
449
3
8
12
8" azalea / hibiscus (3 qt.)
269
5
14
20
8" mum pan (1 gal.)
260
5
14
21
9" mum pan (1.25 gal.)
166
8
22
33
10" hanging basket (1.25 gal.)
150
9
24
36
12" color bowl (2 gal.)
112
12
32
49
12" hanging basket (2.25 gal.)
100
14
36
54
1 quart
850
2
4
6
2 quart
400
3
9
14
1 gallon trade
300
5
12
18
1 gallon
210
6
17
26
2 gallon trade
125
11
29
44
2 gallon
102
13
36
53
3 gallon
70
19
52
78
5 gallon
52
26
70
105
7 gallon
35
39
104
156
*May vary depending on container brand, media, and fill method.
Large Container Volumes
Large Container Volumes
Surface Area (sq. ft.)
Low
Med
High
10 gallon (17" diam.)
1.4
47
126
188
15 gallon (17.5" diam.)
1.5
50
135
202
20 gallon (21" diam.)
2.3
77
206
309
25 gallon (22.5" diam.)
2.8
94
251
377
30 gallon (26.5" diam.)
3.8
128
341
511
45 gallon (30" diam.)
4.8
161
430
646
65 gallon (30" diam.)
5.6
190
520
742
100 gallon (36" diam.)
7.1
239
637
955
200 gallon (48.5" diam.)
12.8
430
1148
1722
24" box
4.0
135
359
538
30" box
6.25
210
560
842
36" box
9.0
303
807
1211
48" box
16.0
538
1435
2152
For containers not listed, multiply surface area by:
34
90
135
Incorporation
Low
Med
High
Pounds per cubic yard
3.0
8.0
12.0
Kilograms per cubic meter
1.8
4.7
7.1
Grams per liter
1.8
4.7
7.1
Landscape**
Low
Med
High
Pounds per 1000 square feet
7.0
13.0
20.0
Kilograms per 100 square meters
3.4
6.3
9.8
Pounds of N per 1000 square feet
1.1
2.0
3.0
**ICL recommends low rate on heavy or clay soils, high rate on light or sandy soils.
Approximate Volume Measurements
#1
#2
#3
#4
#5
#6
#7
ICL spoons (grams)
10
14
19
39
51
75
101
1 tsp.
1 tbsp.
1/4 c.
1/3 c.
1/2 c.
1 c.
Conventional measures (grams)
5
16
71
94
141
283
How to Use
Verify product analysis, longevity, and rate for plants in your production system (for assistance, contact your regional ICL Territory Manager or call ICL Customer Service at 800-492-8255)
Consult rate tables printed on bag labels and product sheets
For incorporation, blend into growing media to ensure uniform distribution of fertilizer
Do not over-mix (doing so could damage fertilizer coating)
Growing media should be used within two to four weeks after incorporating fertilizer
For top-dress applications, spread fertilizer evenly on container surface (avoid piling fertilizer directly against plant stem)
Irrigate after application (irrigation frequency and volume should be adjusted during the crop production cycle according to crop type, environmental conditions, and desired soluble salt levels)
A product trial is recommended before adopting a new fertilizer program or making full-scale changes to standard cultural practices (test several rates on representative plant types)
Use caution when applying to plants being over-wintered under cover (if you can't monitor soluble salts and/or adjust irrigation practices, avoid fall and winter applications)
