Greensand for water filtration used as soil enhancer?

[Palmfarmer]

Hey, I like to get some greensand in my potting mixes for a really slow Realese of pottasium. 

I see there is some bags ment for fertilizing that costs over 100 usd. However there is another seller that sells it by the lbs really cheap, but it says it is for water filtration.

Is there really any difference in these? 

Edited January 23 by Palmfarmer

[RJ]

8 minutes ago, Palmfarmer said:

Hey, I like to get some greensand in my potting mixes for a really slow Realese of pottasium. 

I see there is some bags ment for fertilizing that costs over 100 usd. However there is another seller that sells it by the lbs really cheap, but it says it is for water filtration.

Is there really any difference in these? 

A member here @buffyhas used it. I haven’t seen him here in awhile so if he doesn’t chime in perhaps someone else can ched some light. 
 

https://www.thespruce.com/organic-fertilizer-green-sand-2539762

Edited January 23 by RJ

[Palmfarmer]

On 1/23/2023 at 9:37 AM, RJ said:

A member here @buffyhas used it. I haven’t seen him here in awhile so if he doesn’t chime in perhaps someone else can ched some light. 
 

https://www.thespruce.com/organic-fertilizer-green-sand-2539762

Thanks, I hope he or anyone else has something they know about the topic. 

[Banana Belt]

Greensand is composed of Glauconite, a diagenetic mineral formed in shallow marine environments.  Glauconite sand under the microscope look like green pellets, are soft and easily broken up.  The larger the grain size the slower the release of Potassium as glauconite is non soluable but will exchange cations.  If one wants a faster releasing potassium from glauconite the sand can be ground finer using a blender or into smaller and finer amounts an electric coffee grinder.  This will alow the glauconite to release potassium much faster.

[buffy]

I used it when prepping the planter for my very robust Sabal palmetto x S. causiarum. It's been a hell of a plant, so perhaps it's worth repeating. It's been 15 years since I planted it, so I can't remember the details other than using green sand rather than regular in the bed. Probably a foot deep. 

[Jubaea_James760]

I'm trying this one. Seems promising for all the minor elements anything will need. I wish there was a list of all elements in the product though... I emailed the company,  hopefully they could provide one.