I’ve recently recommended this to a coworker to whom I will be giving some plants. I might give it a go here real soon too. 
thank you both for the insight
3 Likes
I’ve been giving it to everyone that I give veg, flower, or cannabis seeds and plants to, I really think there’s no simpler way to get folks past the fear of killing plants than telling them the magic beads do everything and they should just water regularly and occasionally add the stuff I give them in old spice shaker jars, which is mostly Recharge, Maxicrop, or some micronized rock from a local place called Stoned Dust.
I’ve been giving people a $120 container garden recipe all spring from Lowe’s and Walmart:
Lowe’s:
$35 6cf bale of Sunshine 4 Pro Aggregate mix with mycorrhizae
$5 bag of river sand
Wal-Mart (online, free shipping)
$25 Wiggle Worm castings 30#
$12.50 for 4# Dr Earth Tomato and Veg 4-6-3
$14 Osmocote Plus Indoor-Outdoor 15-9-12 with micros 2#
$12 Alaska Fish Emulsion 5-1-1 32oz
$12.50 Earth Science fast acting gypsum 2.5#
$6 Bonide Insecticidal Super Soap (potassium salts with Spinosad 16oz RTU spray
$7 Bonide Bt Thuricide 16 oz RTU spray
And then either pickle/olive/etc 1-5g white buckets drilled out with some gravel in the bottom, or those panda film grow sacks that are dirt cheap. I keep telling people to just get this shit and mix it up and they’ll have no problem growing a buttload of produce or cannabis with it, with no issues and a soil mix that’s ready to use again next year no worries.
If they want more volume I just tell them to add some good double milled black mulch and a $6 30# bag of composted cow or chicken manure, and a bag of landscaping pumice, or just find leaf mold and more sand, or just double the Sunshine. Lots of options but I figured that having a basic recipe just over $100 that fills a patio or garden is a good start for a lot of people.
If they really want to go for it with a mineral-based living soil I recommend they add smectite clay like bentonite or Montmorillonite which are also known as Fuller’s Earth and are very cheap. And some greensand for glauconite, landscaping or aquarium pumice for silica and to aerate the mix back up, and basalt/granite rock dusts.
At that point you’ve got a nice peat base just packed with lots of nice clay, sand, and other minerals, with a time release salt fertilizer and a pretty complicated organic structure from the worm castings and Dr Earth mix (which is a lot of fish bone meal and alfalfa and other stuff all conveniently mixed and spiked with beneficial microbes and fungi) with a bunch of fish guts for microbe breakfast whenever you toss some in. Plus “forest floor products” from your (hot mulched) black bark and shit, and leaf mold if ya scraped some up from the woods. Pretty nice, powerful mix that should be lightweight but nutrient-packed, since oxygen plus water plus microbes and decay/weathering equals plant food, and the Osmocote is going to take things to the next level like some anabolic steroids.
Nobody’s gone for it that hard yet but I’ve basically drawn myself a plan to reboot my soil mix if I ever feel the need to do it, and it’s been a good thought exercise for getting my own garden together this year.
3 Likes
I was wondering if you only use the 15-9-12 and not the 14-14-14.
Also, how long does one application last?
I’m still trying to figure out a method which I like to use. In the past I used synthetics and they worked great. ATM I’m dialing in organics and I’m deciding on what I like better.
1 Like
the 14-14-14 doesn’t have any minerals/micronutrients, just NPK. The 15-9-12 is loaded with micros (except calcium). The store variety indoor-outdoor plus lasts 5-6 months while the manufacturer sells big 50lb bags of various time tables
It seems like the indoor-outdoor plus is very organics friendly, lots of aquarium forums have old threads talking about using it because it doesn’t shock their fish
3 Likes
Yea like he said the one we use (consumer Osmo+ Indoor-Outdoor with micros) is a six-month release, but they make all different schedules up to a year plus release for commercial ag. The consumer one is great because of the micros and the NPK is a good universal/base nute and it plays nice with organics from the slow release (and maybe the micros?) but it’s also the right slow release for a season of growing cannabis or garden veg. Or you just reapply 2-3 times a year for perennials and houseplants.
There are two different commercial 15-9-12 Osmocote formulas with different release schedules:
The second one is what we buy on the consumer market as Osmo+
This post gives some research numbers on nutrient release if that helps:
I’m also trying to get into a mixed regimen of Osmocote for synthetic nutes as a boost to a healthy organic soil, thinking it will get me the best overall results. So far so good on the one that I have been trying it with, she’s outpacing everything else in the tent, but it’s hard to tell objectively because the genetics are definitely stronger/bigger.
7 Likes
And the thing that catches my eye is that we actually need more magnesium than phosphorus, and more calcium than potassium. Maybe for cannabis we should call it N-Mg-Ca?
3 Likes
@Dirt_Wizard thanks for even more info. lol
I think I’ll give Osmocote a try in a few grows, on both my cannabis and my veggie garden.
I think it would be a cool experiment to run a few clones all using different nutrients to see what the
differences would be. I’m sure someone already has done this in some way.
1 Like
I’m trying the 15-9-12 out this year myself. I need to do a runoff test to see what I should ph my r/o water to….any tips?
3 Likes
Not sure! The manufacturer says it’s not effected by pH from what I can find, but here’s your rabbit hole:
“Osmocote controlled-release fertilizers are not affected by salinity, pH, microbial activity, water quality, or rain. Only soil temperature and coating type and thickness influence the longevity and release of nutrients.”
5 Likes
Thank you sir, you’re quite the info hound! Much appreciated buddy! 
2 Likes
I just got a bunch done this morning so here’s a research paper sweep up for y’all:
Osmo+ 15-9-12 for cultivating agave:
e.1431-ENG.pdf (1.1 MB) e.1431-SPA+.pdf (1.1 MB)
Osmo for feeding bioremediation microbes:
1-s2.0-S2666049023000026-main.pdf (654.4 KB)
3 Likes
@buckaroobonsai I’m in prime form this morning, buddy! So I think your answer might also be in here, my earlier post with the infographic that I just referenced about release rates and stuff? This is the Masters thesis that those research conclusions were drawn from, it’s available through the university’s digital commons:
Optimizing the Physical and Nutritional Environment of Unleached.pdf (3.6 MB)
5 Likes
Wow, that’s like way above my comprehension level, lol! I’m thinking I’ll just go with my regular 6.2-6.5 input and cross my fingers, thanks again dude!
2 Likes
lots of great info @Dirt_Wizard Im running some testers from a breeder in 1 gallon pots w/ 1 tablespoon of 14-14-14 and 1 tablespoon of 15-9-12 picked up both from ace hardware with a nice coupon. There are 2 different strains the pics below & are from day 30 of flower.
Also running a Rainbow Guava Clone in 3 gallon day 35 flower
10 Likes
Don’t worry about it.
3 Likes
Have you done a soil analysis on the final mix, after it’s “mellowed” out in a container for a couple weeks? If not, I recommend Ward Labs.
UB
2 Likes
That’s what I do. It’s the best of both worlds.
UB
2 Likes
The table tells me that n is easily stored in leafs more so than p and k
And as they are not as mobile as n they need to be topped up and regular in feeding , same as toppin up mothers with p and k a week before takin cuts so cuts not starting of too low in them
ie if using grow for veg stage for 4w it’s best to give a few feeds of bloom to top p and k up in plant
Osmocote probably works well outside in ground a n leaches gradually away into ground but in Pots not as much as n will remain higher kind off unless regular and good runoff
: )
1 Like
That thesis I posted a few up is pretty great, I’m still digesting it bit by bit but the premise is that NASA paid for the research at Utah State, supervised by Dr Bugbee, as part of their research on growing plants in space or on future colonies. He studied the optimization of using a ceramic (calcined clay) media like Turface which is what they already use in space, with polymer coated controlled-release fertilizers in a zero-runoff system that maintained a centimeter of water table at the bottom of the containers, with a peat/vermiculite mix control group as well. It’s pretty huge but I pulled a few interesting graphs and the table of contents for the other figures and charts for folks to browse more easily (including myself!):
8 Likes