mike_p

Hi Greg
Concerning your growing conditions, about all I know is that they are very different from mine.
I'm always surprised when people have problems growing boxwood bonsai. I've seen them grown successfully in a vast range of soils.
In my case, the base for all my bonsai soil mixes is crushed lava, 1/8" to 1/4". To that I add other components as seem necessary for the particular plant.
In the case of boxwoods, the mix would be about 60-70% lava, and the rest commercial planting mix, fir bark, etc. I keep them in mostly shady conditions.
Concerning ph factor, the experts say a range from around 6.5 to 7.5 works.
My water supply has a ph of 8 or more.
I can't imagine you would need to dose with lime unless your water is very acid. Get a ph tester and check it, or call the water company. They should be able to tell you.
Can you post pictures of the foliage on the boxwoods you are having trouble with?

Good luck

Mike

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