http://withknifeandfork.com/curious-acorn a blog mostly about food Sun, 13 Jan 2019 19:41:31 +0000 hourly 1 https://wordpress.org/?v=4.1.41 http://withknifeandfork.com/curious-acorn#comment-3296 Mon, 30 Aug 2010 16:23:37 +0000 http://goodshoeday.wordpress.com/2010/08/20/curious-acorn#comment-3296 Its a knopper gall….I looked it up and it is one of a series of galls that can affect oak trees. They are often caused by wasp larvae on different parts of the tree. Oak apples are another example. This particular one is a knopper gall ( see here for lots of info http://en.wikipedia.org/wiki/Andricus_quercuscalicis ).According to the website of a local woodland it was particularly prevalent round where I live in 2004. It does affect the fertility of the acorns. You can see lots of the different oak galls here http://www.hainaultforest.co.uk/3Oak%20galls.htm

]]> http://withknifeandfork.com/curious-acorn#comment-3297 Mon, 30 Aug 2010 16:23:37 +0000 http://goodshoeday.wordpress.com/2010/08/20/curious-acorn#comment-3297 Its a knopper gall….I looked it up and it is one of a series of galls that can affect oak trees. They are often caused by wasp larvae on different parts of the tree. Oak apples are another example. This particular one is a knopper gall ( see here for lots of info http://en.wikipedia.org/wiki/Andricus_quercuscalicis ).According to the website of a local woodland it was particularly prevalent round where I live in 2004. It does affect the fertility of the acorns. You can see lots of the different oak galls here http://www.hainaultforest.co.uk/3Oak%20galls.htm

]]> http://withknifeandfork.com/curious-acorn#comment-3295 Sun, 29 Aug 2010 13:48:24 +0000 http://goodshoeday.wordpress.com/2010/08/20/curious-acorn#comment-3295 A branch fell off an oak tree as I walked by today and when I examined it. I saw that there were some ordinary acorns and these curious knobbly bits too. All over. Never seen it before and wondered if it was diseased

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