Purely Organic fertilizer

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Has anyone used Purely Organic for their slippers? Is there a formula orchids? I have read an interesting article by Sue Bottoms about it and am wondering if you noticed any differences in your plants? Where did you buy it? The only ones I can find are for lawns and vegetables.

Thanks
 

Ray

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Whether sourced from organic or inorganic sources, the ions absorbed are identical.

One of the difficult things about organic fertilizers is making sure all the nutrients are available in sufficient quantities. Then there are the costs…
 

Ray

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I took a look at their products. The granular stuff is not water soluble, so must either leach out over time or be released by microbial action.

The liquid version (13-0-4, of which only 8% of the nitrogen is water soluble), is “corn steep liquor and soy protein hydrolysate”, and the label clearly states “Not for use in Organic Crop or Organic Food Production”.
 
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I used it, got it from a guy in NC. Keith Davis Keith Davis Orchids (mostly cattleyas) was a big fan and gave the source, but last I heard him speak (about a year ago) he said one of the ingredients was no longer available so the formula is not as effective. It use to produce multiple leads. I still have a lot of it (original formula) but didn’t like to have to put it in the little tea bags. Now there are little black plastic baskets for it (this month’s Orchids mag has them.). So now Keith is recommending the following. He was on UNCs horticultural staff so is very knowledgeable. He will have UNC test stuff sometimes. For instance, they know from testing, that after 3 years Orchiata becomes acidic rapidly. Anyway, here’s what he recommended last:
“ Pro-Mix HP CC
With Mycorrhizae

Fungus colonizes, then causes roots to take up more water and nutrients than they normally can.

⅜-½” layer on top of mix

7 leads on plant (photo) that only had 3 before.”
 
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No, I’ve not tried it. Apparently it’s the Mycorrhizae that makes the difference. He did mention that Russ Bolt of Looking Glass Orchids in NC pots in it (only potting mixture) because of the number of orchids he has. It allows him to water less. I bought a division, Lc. Mary Elizabeth Bohn ‘Royal Flare’ AM/AOS, from Russ potted in it. It had 12 flowers on 4 spikes when I bought it. After bloom, I repotted it in my mix as I was afraid I’d kill it in that mix by overwatering. It was a bear to clean the Pro Mix out of the roots (8” pot), took me forever and damaged a lot of roots as it was very packed in like old moss in a big box store phal. Roots were healthy, though overall. I was concerned it wouldn’t bounce back because of the extreme repotting trauma. The plant adjusted well over a few months and blooms almost all the time, as it throws a lot of leads. I have 2 flowers now. Usually get between 2 and 4 at a time. But it’s bloomed 5 times since 9/15/2020 when I bought it. 11/20, 6/21, 8/21, 10/21 and now. It’s a very prolific grower (much like C. trianaei semi-alba ‘Kathleen’), hence almost always in spike, but sometimes the leaves curl a bit. All of this might just be indicative of the cultivar. I don’t know. But I wish I could get all the spikes to bloom at once like he did!!
 

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I used it, got it from a guy in NC. Keith Davis Keith Davis Orchids (mostly cattleyas) was a big fan and gave the source, but last I heard him speak (about a year ago) he said one of the ingredients was no longer available so the formula is not as effective. It use to produce multiple leads. I still have a lot of it (original formula) but didn’t like to have to put it in the little tea bags. Now there are little black plastic baskets for it (this month’s Orchids mag has them.). So now Keith is recommending the following. He was on UNCs horticultural staff so is very knowledgeable. He will have UNC test stuff sometimes. For instance, they know from testing, that after 3 years Orchiata becomes acidic rapidly. Anyway, here’s what he recommended last:
“ Pro-Mix HP CC
With Mycorrhizae

Fungus colonizes, then causes roots to take up more water and nutrients than they normally can.

⅜-½” layer on top of mix

7 leads on plant (photo) that only had 3 before.”
SB
regarding
⅜-½” layer on top of mix
are saying you add this layer on top of your regular potting mix?
 

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