Narcissus calcicola

Rodger Whitlock
Wed, 02 Apr 2003 10:06:15 PST
On 30 Mar 03 at 14:00, Arnold wrote:

> The bulb is native to Central Portugal and as the name implies it
> grows in calcareous soil, due to the presence of limestone but
> Henning Christiansen has shown  the pockets of soil it grows in have
> been found to be very acid around  pH 5.9

pH 5.9 is not "very acid". Horticultural neutrality (as opposed to 
chemical neutrality) is often taken as pH 6.5. Blueberries, which 
are real acid lovers, demand a pH somewhere down around 4.0. That's 
truly acid soil!

"Somewhat acid but with reasonable amounts of calcium" would be a 
better description. (I'm assuming that the adjacent limestone 
puts some calcium into the soil -- did he analyze it for that?)

Rodger Whitlock
Victoria, British Columbia, Canada
"To co-work is human,
to cow-ork, bovine."

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