15-9-12, 12-14 M

Ideal for greenhouse and nursery container plants, foliage production, and landscaping

15

N

9

P2O5

12

K2O
Find a dealer

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.

  • 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

Longevity at average media temperature

60 ̊F (15 ̊C)70 ̊F (21 ̊C)80 ̊F (26 ̊C)90 ̊F (32 ̊C)
14-16 months12-14 months8-9 months7-8 months

 

 

Surface application (grams)

Common container volumesApprox. containers per cubic yard1LowMedHigh
6" azalea / hibiscus (1.5 qt.)539101418
6" standard (1.75 qt.)462121621
6.5" azalea (1.8 qt.)449121722
8" azalea / hibiscus (3 qt.)269202836
8" mum pan (1 gal.)260212938
9" mum pan (1.25 gal.)166334559
10" hanging basket (1.25 gal.)
150365065
12" color bowl (2 gal.)112496787
12" hanging basket (2.25 gal.)100547598
1 quart8506911
2 quart400141924
1 gallon trade300182533
1 gallon210263646
2 gallon trade125446078
2 gallon102537396
3 gallon7078107139
5 gallon52105144188
7 gallon35156214279
1May vary depending on container brand, media, and fill method.

 

 

Large container volumesSurface area
in square feet		LowMedHigh
10 gallon (17" diam.)1.4188259337
15 gallon (17.5" diam.)1.5202277362
20 gallon (21" diam.)2.3309425554
25 gallon (22.5" diam.)2.8377518675
30 gallon (26.5" diam.)3.8511703916
45 gallon (30" diam.)4.86468881157
65 gallon (30" diam.)4.86468881157
100 gallon (36" diam.)7.195513131711
200 gallon (48.5" diam.)12.8172223683085
24" box4.0538740964
30" box6.2584111561506
36" box9.0121116652169
48" box16.0215229593856
For containers not listed, multiply surface area by:135185241

 

 

Incorporation

LowMedHigh
Pounds per cubic yard12.016.521.5
Kilograms per cubic meter7.19.812.7
Grams per liter7.19.812.7

 

 

Landscape2

LowMedHigh
Pounds per 1000 square feet13.526.540.0
Kilograms per 100 square meters6.612.919.5
Pounds of N per 1000 square feet2.04.06.0
2ICL recommends low rate on heavy or clay soils, high rate on light or sandy soils.

 

 

Approximate Volume Measurements

 

ICL spoons

#1#2#3#4#5#6#7
Grams91418384975100

 

 

Conventional measures

1 tsp.1 tbsp.1/4 c.1/3 c.1/2 c.1 c.
Grams5156386126252

1
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)
2
Consult rate tables printed on bag labels and product sheets
3
For incorporation, blend into growing media to ensure uniform distribution of fertilizer
4
Do not over-mix (doing so could damage fertilizer coating)
5
Growing media should be used within two to four weeks after incorporating fertilizer
6
For top-dress applications, spread fertilizer evenly on container surface (avoid piling fertilizer directly against plant stem)
7
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)
8
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)
9
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
10
Store in a clean, cool, dry place

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
thumb

Our products

Products for greenhouse and nursery ornamental plants

Explore our products
thumb

Our brands

Setting the standard in the ornamental market for 50+ years

Explore our brands
thumb

Our knowledge

Tips and advice, the latest technologies, market related information

Explore our knowledge