Walter Pall's main blog about bonsai and his work with trees from day to day. Lots of good pictures of good trees and lots of valuable information about bonsai.
Dear Walter,It is nice to see the development of your very beautiful hollowed Acer campestre since you last posted on it 11 months ago (albeit shrouded in snow), this tree is quite an inspiration to me.Acer campestre is one of my favorite species (being Britain's only native Acer) and this tree promises to look trully stunning in just a few years time. What sort of night time temperatures are you having there? The coldest we have experienced in Bristol (SW England) is -7.5C but I'm sure it is much colder with you, very beautiful though. Regards,Matt
Matt, in my garden I have around -10°C during the night. but in East Germany they ahve -27.5°C and even lower!Walter
-27.5°C is colder than it has ever been recorded in England; -26.1°C, 10 January, 1982 (Shropshire). I assume that these sort of extreme temperatures could cause severe damage to some trees, though assumably not those adapted to the mountains such as your larch and spruce.
Matt, I absolutely would not want to try out whether these temperatures are still save.Walter
I can well understand that Walter, not having a green house in my small garden I get a little nervous about some of my trees durring particularly cold weather, I can't offer much protection to the more vunerable trees. With temperatures into the minus twentys I would dispair!Regards,Matt
Walter How many pots will you lose to cracking over the winter?ElroyOttawa, Canada
Elroy,none or only a couple of very chaep ones. Good pots don't crack under these circumstances. Trust me, I am doing this since 30 years.Walter
At the end of march last spring we had a coldspell of - 17 celsius where I live in the south east of Norway, (that very unusuall even for Norway) I had all my native trees outside, we had no snow to protect them from the cold and none of them suffered any damage, pines and spruces will be fine even if its below - 20 degrees for prolonged periodes during winter as long as they are completly dormant.
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