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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comThe bignonia plant is 30 years old. It climbs upon an arc, near to the neighbour’s balcony.Every summer it had a lot of very beautiful orange trumpet-shaped flowers. Now something strange happened: many leaves have yellow or black spots, other leaves are totally damaged, some are normally green. What happened? Has someone used herbicide on the plant? Thank you.
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1 Comment To "bignonia climbing plant"
#1 Comment By BushDoctor On 06/04/2018 @ 5:24 pm
This is the most common issue for this time of year. It is a fungal infection that can be cured with dolomitic lime and wettable sulfur. The old growth will not return to normal, but it will stop the spread and the new growth will be unaffected.