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.
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Patterned Release Technology meets specific feeding cycles with unmatched consistency, efficiency, and safety
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Can be incorporated into growing media or surface applied in the container
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Use alone or in combination with a water-soluble fertilizer
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Safe for sensitive crops
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Suitable for use with dibbling equipment
Longevity at average media temperature
60 ̊F (15 ̊C) | 70 ̊F (21 ̊C) | 80 ̊F (26 ̊C) | 90 ̊F (32 ̊C) |
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4-5 months | 3-4 months | 2-3 months | 1-2 months |
Surface application (grams)
Common container volumes | Approx. containers per cubic yard1 | Low | Med | High |
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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 |
Large container volumes | Surface area in square feet | Low | Med | High |
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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 | |
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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 |
Landscape2
Low | Med | High | |
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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 |
Approximate Volume Measurements
ICL spoons
#1 | #2 | #3 | #4 | #5 | #6 | #7 | |
---|---|---|---|---|---|---|---|
Grams | 10 | 14 | 19 | 39 | 51 | 75 | 101 |
Conventional measures
1 tsp. | 1 tbsp. | 1/4 c. | 1/3 c. | 1/2 c. | 1 c. | |
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Grams | 5 | 16 | 71 | 94 | 141 | 283 |
Brand details
This product is part of the Osmocote Plus portfolio
Available in a variety of longevities and release patterns, it's the most versatile and widely-used CRF on the market.
Learn more about Osmocote Plus