Suggestions on slow release fertilizer

TheMasterGardener1(5B)July 20, 2012

I need to find a good slow release fertilizer like in a 40# bag with all needed nutrients. I will check around but if anyone knows a good name please let me know so I can look for it. I like Osmacote plus, not sure if I can find it in big box stores though.

What do you use?

Thanks in advance.

Thank you for reporting this comment. Undo
redshirtcat(6a MO StL)

I don't think you're going to find a quality complete CRF at a big box store if by complete you mean major, minor, & micros.

I would probably go with Osmocote Plus for this - but note that the 15-9-12 product that comes in 50 lb bags does not contain Ca (well not enough to meet labeling laws anyway). The 5lb version that comes in shaker bottles does. There's a wide variety of professional osmocote products that you would likely have to track down at a nursery supply place. Most of them lack substantial calcium (by design, I understand) - so you'll have to manage the Ca yourself. Some lack Mg as well and etc.

I don't believe you will find Ni or Cl in any of the professional products - but I also don't think that's a problem unless you're using rainwater, and a 100% inorganic planting medium.

How do you plan to use the fertilizer?

    Bookmark   July 21, 2012 at 12:30AM
Thank you for reporting this comment. Undo
TheMasterGardener1(5B)

Thanks redshirtcat.

So far Vigoro CRF is a good one that I found and it has high levels of Ca and it has sulfur too. I can only get it in a 3.5# bag but Maybe I will only need 2 bags for the amount of plants I will have.

"How do you plan to use the fertilizer?"

I plan to use it in containers. I will have a huge 5 gal container garden next season and know I wont be able to mix all that fertilizer. I would rather use CRF and then just water from the hose. I can top dress with the CRF when needed.

I may not need to get a large 50# bag.

Any more suggestions about application rates ect...?

    Bookmark   July 21, 2012 at 6:35AM
Thank you for reporting this comment. Undo
calistoga_al

I only buy my CRF from a farm supply, where it is only available in 40 or 50 lb bags. They carry several brands with a choice of NPK as well as minors, and duration of timed release. I keep mine in the bag inside of 30 gallon plastic garbage containers, which keeps it dry. Al

    Bookmark   July 21, 2012 at 9:02AM
Thank you for reporting this comment. Undo
marco79

maybe you can fin more information on the subject on haifa-group

Here is a link that might be useful: slow release fertilizers

    Bookmark   March 10, 2013 at 5:01AM
Sign Up to comment
More Discussions
Meyer Exploding in 5-1-1
My meyer lemon in 5-1-1 is just going nuts right now....
Jay Part Shade (Zone 10B, S21, Los Angeles)
Type of kale... Also, shiny metallic flakes?
Hey, my friend gave me some kale seeds from her plants...
Josie Murray
Avocado as a Container Plant III
Well, another wonderful Summer is passing, and there...
greenman28 NorCal 7b/8a
Help with 1:1:1 - weight and sourcing in the UK
I've just clicked that weight is going to be an issue...
containergardenerbeginner
Potting into Air Pots, root length question
Hello all, My question is, air pots are supposed to...
stickstring (Northern California 8b)
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™