japanese aralia leaves turning brown

lidibean(vancouver - 6b)August 30, 2005

i purchased a japanese aralia (fatsia japonica) a couple of months ago and it was quite happy living on my balcony until a few weeks ago when the leaves started to turn brown. i am thinking that it may be due to direct sun exposure burning the leaves, but i would love any input. (i have moved the plant inside for the time being to see of it makes any difference.)

Thank you for reporting this comment. Undo
john_z(Z 7b Ga.)

Lidibean, I think this quite possibly leaf scorch from unwanted strong sunlight. I have seen this happen to Fatsia in south-facing directions during the winter months when trees defoliate. Fatsia is definately a shade lover.

I put your pics in "My Pictures" file so could magnify them. I don't see a golden-yellow halo around the scorched area that might indicate fungal infection, such as Colletotrichum leaf blight. (This one and many other fungal infections don't follow the common pattern of circular brown spots with a gold halo). Also, the red areas in your second pic appear to be the beginning of over-exposure to intense light - so the chlorophyll (green leaf pigment) is destroyed exposing anthocyanin beneath (violet-red pigment).

To rule out possible fungal infection, check to see if there are black and/or white fruiting bodies in the dead leaf tissue. This might require a magnifying glass. Spider mites also cause extensive damage to leaves, but I don't think this is the case.

    Bookmark   September 2, 2005 at 7:49PM
Thank you for reporting this comment. Undo
lidibean(vancouver - 6b)

thanks john z!

since i have moved the plant inside the browning seems to have stopped, so it must be due to sun. i appreciate the feedback!

    Bookmark   September 3, 2005 at 5:10PM
Sign Up to comment
More Discussions
Planting my starts 2015
It is time to plant my seeds in cups so I have well...
Steve, Micro (6B ground, 5B roof)
What is the name of that plant?
Can I know what is the name of the plant of whose picture...
How can I make unique?
How can I make my balcony gardening unique?Please give...
Sanjok Dangol
Need help for my balcony kitchen garden
Hi from Ahmedabad. I have two big balcony of about...
Depth of catmint container
Hello, I'm a newbie on here and to gardening in general....
© 2015 Houzz Inc. Houzz® The new way to design your home™