General Gardening Info
Q.

Why do my outdoor plants have yellow leaves?

Zone Paris, France | Lastree added on September 12, 2019 | Answered

Hello, I have a few plants in my courtyard and they've all started to have yellow leaves two months ago. I stopped watering them in case it might be the issue, but nothing has changed. I've also noticed a white bug on a plant but it only happened once. Thanks in advance for your help!

A.
A.Answers to this queston: Add Answer
BushDoctor
Certified GKH Gardening Expert
Answered on September 13, 2019

Unfortunately, the watering may have stopped too late. This is an infection likely caused by overly wet soil.

From here you will need a fungicide.

They also require quite a bit of shade, so if this receives full sun, then this will cause the tree to succumb to the disease much faster.

This article will help: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm

This article will help you with the care of these trees: https://www.gardeningknowhow.com/houseplants/aralia-plants/japanese-aralia-care.htm

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