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Posted

Ive found that palms that originate from alkaline soils seem to do much better potted in alkaline mixes. My understanding is that most commercial potting mixes lean towards acidity. Does anyone use a alkaline commercial mix that they are purchasing? Or are others making their own like I am, and if so what are you using?

Glenn

Modesto, California

 

Sunset Zone 14   USDA 9b

 

Low Temp. 19F/-7C 12-20-1990         

 

High Temp. 111F/43C 07-23-2006

 

Annual Average Precipitation 13.12 inches/yr.

 

             

Posted

Glenn, I use regular potting mix which is probably acidic in nature. When I plant carribean and alkaline loving species I add Dolomite Lime into the mix.

Matt Bradford

"Manambe Lavaka"

Spring Valley, CA (8.5 miles inland from San Diego Bay)

10B on the hill (635 ft. elevation)

9B in the canyon (520 ft. elevation)

Posted

I think you'd have to make your own. If the US is like Australia, the allowable pH range for an Australian standard potting mix is 5.3-6.5. Slowly add some lime and check the pH as you go to make sure you don't over do it.

Best regards

Tyrone

Millbrook, "Kinjarling" Noongar word meaning "Place of Rain", Rainbow Coast, Western Australia 35S. Warm temperate. Csb Koeppen Climate classification. Cool nights all year round.

 

 

Posted

I'm a great fan of using dolomite too.

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