The Poly-S technology in Osmocote Blend 18-3-12 Quickstart ensures that nutrients are delivered at a constant rate regardless of climate or temperature swings.
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Economical choice for general purpose outdoor production
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Special, uncoated NPK core mix safely provides a burst of nutrition early in the growth cycle
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Consistent release and accurate longevity across multiple temperature ranges
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Highly efficient nutrient delivery promotes robust growth and maximum economy
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Dual coatings reduce nitrogen leeching and decompose with minimal environmental impact
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Fortified with STEP Hi-Mag micronutrients
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Can be incorporated into growing media or surface-applied in the container
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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9-10 months | 8-9 months | 6-7 months | 5-6 months |
Surface application (grams)
Common container volumes | Approx. containers per cubic yard1 | Low | Med | High |
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1 quart | 850 | 4 | 6 | 8 |
2 quart | 400 | 8 | 13 | 17 |
1 gallon trade | 300 | 11 | 17 | 23 |
1 gallon | 210 | 16 | 24 | 32 |
2 gallon trade | 125 | 26 | 40 | 54 |
2 gallon | 102 | 32 | 49 | 67 |
3 gallon | 70 | 47 | 72 | 97 |
5 gallon | 52 | 63 | 97 | 131 |
7 gallon | 35 | 93 | 144 | 195 |
Large container volumes | Surface area in square feet | Low | Med | High |
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10 gallon (17" diam.) | 1.4 | 113 | 174 | 235 |
15 gallon (17.5" diam.) | 1.5 | 121 | 187 | 252 |
20 gallon (21" diam.) | 2.3 | 186 | 286 | 387 |
25 gallon (22.5" diam.) | 2.8 | 226 | 348 | 471 |
30 gallon (26.5" diam.) | 3.8 | 307 | 473 | 639 |
45 gallon (30" diam.) | 4.8 | 387 | 597 | 807 |
65 gallon (30" diam.) | 4.8 | 387 | 597 | 807 |
100 gallon (36" diam.) | 7.1 | 573 | 883 | 1194 |
200 gallon (48.5" diam.) | 12.8 | 1033 | 1593 | 2152 |
24" box | 4.0 | 323 | 498 | 673 |
30" box | 6.25 | 504 | 778 | 1051 |
36" box | 9.0 | 726 | 1120 | 1513 |
48" box | 16.0 | 1291 | 1991 | 2690 |
For containers not listed, multiply surface area by: | 81 | 124 | 168 |
Incorporation
Low | Med | High | |
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Pounds per cubic yard | 7.2 | 11.1 | 15.0 |
Kilograms per cubic meter | 4.3 | 6.6 | 8.9 |
Grams per liter | 4.3 | 6.6 | 8.9 |
Landscape
Low | Med | High | |
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Pounds per 1000 square feet | 11.1 | 19.4 | 27.8 |
Kilograms per 100 square meters | 5.4 | 9.5 | 13.6 |
Pounds of N per 1000 square feet | 2.0 | 3.5 | 5.0 |
Approximate Volume Measurements
ICL spoons
#1 | #2 | #3 | #4 | #5 | #6 | #7 | |
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Grams | 9 | 13 | 17 | 35 | 45 | 67 | 90 |
Conventional measures
1 tsp. | 1 tbsp. | 1/4 c. | 1/3 c. | 1/2 c. | 1 c. | |
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Grams | 5 | 14 | 57 | 75 | 113 | 226 |
Brand details
This product is part of the Osmocote Blend, Poly-S portfolio
Poly-S release technology delivers nutrition at a constant rate regardless of climate variations.
Learn more about Osmocote Blend, Poly-S