Viewing post #1258741 by sooby

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Aug 31, 2016 1:04 PM CST
Name: Sue
Ontario, Canada (Zone 4b)
Annuals Native Plants and Wildflowers Keeps Horses Dog Lover Daylilies Region: Canadian
Butterflies Birds Enjoys or suffers cold winters Garden Sages Plant Identifier
dyzzypyxxy said:Hi Sacha and welcome. I'd be very worried if I saw that on any of my plants. Phytopthora or Pythium both look like that and are very *fast-spreading* black rot fungi........ Doubt very much that either of those organisms would live naturally outdoors in the UK.


I agree it's cause for concern but just to additionally note that several species of both phytophthora and pythium do occur naturally outdoors in the UK.

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