Phragmipedium kovachii - "Jessica". Photo  Heinz Plenge

 

PK culture (continues):  This mix will last up to 2 years.
It is highly recommended to add the sea and eggshells
as a very fine powder to be scattered over the media
every 2 months.

The fertilization program is weekly using a 15-5-15
formula and calcium nitrate or magnesium sulfate
dissolved in water in a concentration of up to 300 ppm.  
We have been testing other fertilizers the last 4 years.
In the future we will release our findings here.

Good ventilation has proven to be a key factor.  Light mustbe n the medium range, less than what Cattleyas require. Midday sunlight must never reach the leaves.        
    

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