Sweet Viburnum leaf rust / discoloration

12 months ago
last modified: 12 months ago

Hi. I live in Orlando, Zone 9B. I planted 12 Sweet Viburnum's along my fence line about 6 months ago. All seemed OK until a few weeks ago. I noticed a few rust colored spots on one of them. Now all 12 of them have these discolorations and they are on old and new growth.

Is this heat/drought stress (it's hot here, although I try and keep them well watered), or something more sinister?

They are mixed in with Ligustrum Rec. and Bigfoot Cleyera and those seem OK still.

Many thanks for any advice.

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