My 3 yr old lilac bush is blooming and dying in sections at same time

The leaves came first this year and the buds kept growing and it bloomed 3 days ago. Since blooming I notice 3 sections of bush where leaves are withering and dying and the blooming panicles are turning brown. I live in St. Louis county, MO and we have had so much rain this spring, but my garden is in full sun and on hill so I know it’s not holding excess water. I fed phosphorous 3 days ago and 3 weeks prior added a layer of organic soil around entire garden then mulched. I don’t see bugs but if it’s ill I don’t know what to look for. I’m really sad about this as my gardens are my pride and joy. Can you help?

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1 Comment To "My 3 yr old lilac bush is blooming and dying in sections at same time"

#1 Comment By GKH_Susan On 05/11/2020 @ 4:29 pm

It could be bacterial blight. This article should help:
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm ^[1]

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[1] https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm

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