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Question from Lorna Whittemore

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I have several of these in my garden chosen by a garden planner so hopefully suitabley positioned. However the leaves on a few of them have suddenly gone black but the stems are still green. Any ideas what has happened?

  • Views: 939
  • Replies: 2
  • Posted: Sun. 27th September 2009 12:32

Veronicastrum trouble

Reply from Kathy C

Hi, Lorna,
Veronicastrum like moist, well-drained soil, preferably in full sun. As long as they looked good all summer, I would think they were in the right position. Typically, the old leaves of Veronicastrum turn brown after flowering (which is pretty much this time of year). Turning black could indicate a fungal problem. Regardless, cut the plant down to new basal growth and destroy the dead cuttings. Next year, you can spray the plants with a fungicide if you notice the problem early in the growing season. If it is a fungus, this will prevent its spread.
Kathy C.

  • Posted: Tue. 29th September 2009 19:54

Thanks

Reply from Lorna Whittemore

Thank you very much, I will get chopping.

  • Posted: Wed. 30th September 2009 21:36