Author Topic: Japanese Black Pine Acidification  (Read 18524 times)


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Re: Japanese Black Pine Acidification
« Reply #60 on: September 11, 2011, 11:18 AM »
Thank You Alain for sharing your experience.  And I have to agree with you, that's an impressive trunk and nebari for a 10 y/o Trident.  I have one JM in a 18"x24" and it's developing some great nebari too. 
You said "If you use a mix with more water retention", don't you mean less water retention so one can "can water several times a day with a nutritive solution"
I'm going to repot my JM's into 100% inorganic this next spring to try your suggestion.  An aggressive feed regimin.


Alain Bertrand

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Re: Japanese Black Pine Acidification
« Reply #61 on: September 11, 2011, 12:49 PM »
This is not a trident but a  japanese mapple, momiji. As they tend to grow a little bit slower than the tridents, I am all the more happy with it.

Sorry for being unclear, but I wanted to say that to get maximum growth one have to use either a mix with more retention that is give plenty of water to the tree with one 's watering  frequency (once a day in my case)  or a mix with low retention but in that case, you must find a way to water  it with a fertilizing solution (because if more water means diluting the fert it is better than no water at all but still far from being optimal).

I can see that very clearly on my pines : I have pines (JBP, JRP, scots) in the same pots with either 100% lava rock or 20% neutralized peat moss 80% lava rock and same fert (oscomote 6 g/L substrate) and one watering at most a day. The formers hardly make chandlers longer than 35cm while the latters are always between 40 and 60 cm. Another difference, though is that the latters do experience root rot in spring if I water too much while the formers never.  World is imperfect ;)