2nd September 2014

Back to ‘blogging’! Most Sycamore leaves, and the leaves of some other maples, will now be covered with the black patches known as Tar Spots. This fungal leaf disease, which start off as yellow blotches in late spring, appear black from late summer through to leaf-fall and do look dramatic but have very little effect on the health of the tree itself. Around this time of year many seeds that are dispersed by the wind are ripening so I’m including this drawing of some of the wind-blown seeds to look out for, including the fun ‘helicopters’ of the sycamore, a non-native tree which is very effective in spreading onto every bare patch and wasteland, partly due to the effectiveness of the seeds in travelling away from the parent tree. Conditions: Sunny and dry till cloud cover built by

The fungal disease 'Tar Spot' on Sycamore and some related Maple leaves in autumn.

The fungal disease ‘Tar Spot’ on Sycamore and some related Maple leaves in autumn.

wind dispersal 4 wind dispersal text

mid-afternoon. Temperature: Max 18- Min 14C.

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