Saturday, September 8, 2012

European spruce #68

In 2010 Erik gave me this wonderful slab. I knew immediately that only an outstanding group should be placed onto it. In June of this year I made up my mind to plant these tow groups together. Now is the best time to repot spruce. The result is, of course, only an intermediate stage. Next summer, when the trees look healthy I will finally wire the whole thing. This is going to take a week.

6 comments:

Unknown said...

Looks Great Walter.
Why specifically, is this the best time to repot Spruce, and equally as important, what have your temperatures been of late, that let you know, THIS is the time? Tx
eric

Walter Pall said...

Eric,
now it is cool enough in Central Europe (we are having around 20 to 25 °C, app. low eighties F). Trees will not be hurt from too much heat and dry air. It is getting cooler and more humid every day. Spruce grow even at rather low temperatures. They will grow until end of October which gives them six weeks to cover wounds and develop new roots. So they can survive the winter and start well in spring.
Any time before they would be hurt by the heat. Any time after they will not be prepared for winter an possibly die.
Most folks repot (and collect) in October, which is a big mistake in my opinion. Why do they do this? Because that's a good time in Omya, Japan. Well, they have a climate which we call Mediterranean. So that does not apply to us at all. Another bonsai myth cracked.

Anonymous said...

and what about reppoting oaks, in europe whts the best time for it in your opinion?thanks

Walter Pall said...

Oaks only by middle of April in Central Europe. Certainly not in fall.

Unknown said...

Thank you very much Walter.
To follow up, will you be fertilizing these repotted Spruce anytime before winter (if yes, how soon after the repot, then how often after), and with what (in terms of NPK ratios of the fertilizer)?
Thanks again,
eric

Walter Pall said...

Eric,
repotted or recently collected trees in modern substrate have to be fed immediately. The feeding regime is exactly the same as for all other trees, full strength. More or less the same feed throughout the vegetation period. Lots of nitrogen right now. No such thing as 'fall feeding'. This is a myth. Trees take what they want and leave the rest. There is no need to think too much for your trees. They are better at that.
Another myth cracked.