Several BT members mentioned they were having this problem so I thought I'd share some information I found:
Verticillium wilt is a fungal disease that enters the plant through
its roots. It is not limited to olive trees and can attack a number of
different plants and trees.
Treesforyou.org has this information on the disease:
?Verticillium wilt fungus is a sneaky disease, entering a plant
through the roots in the soil. Infections are not obvious like some
other diseases, such as powdery mildew or sycamore blight. Symptoms
can be acute... with leaf curling and drying, abnormal red and yellow
coloring of the leaves, partial defoliation, wilting and dieback of
branches. This wilting and dieback will typically develop on one main
branch, a sector of the crown, or an entire side of the tree. Chronic
symptoms are stunted growth, yellowish leaves, crispy brown edges on
the leaves, slow and stunted growth, heavy seed crops, and branch
dieback.?
http://www.treesforyou.org/Planting/TreeCare/Healthy/vertwilt.htm
According to GardenSouthwest.com:
?Signs of verticillium wilt include new leaves rolling inwards and
losing their deep-green, waxy luster and becoming dull gray and brown.
Leaf-drop and twig die-back may follow, depending on the severity of
the infection. Tree death rarely occurs, rather portions of the tree
will die and then new growth may develop from dead areas. The only way
to control this disease it to plant resistant varieties of olive such
as Oblonga.?
http://www.gardensouthwest.com/forums/GardenSouthwest/posts/10.html
If you suspect that your olive tree may be suffering from this
disease,the best thing is to get a professional to take a look at it.
I realise that your olive tree is in a pot, but this fungus can
survive in soil for 14 years (at least), so it may be worth checking
out.
Verticillium wilt is a fungal disease that enters the plant through
its roots. It is not limited to olive trees and can attack a number of
different plants and trees.
Treesforyou.org has this information on the disease:
?Verticillium wilt fungus is a sneaky disease, entering a plant
through the roots in the soil. Infections are not obvious like some
other diseases, such as powdery mildew or sycamore blight. Symptoms
can be acute... with leaf curling and drying, abnormal red and yellow
coloring of the leaves, partial defoliation, wilting and dieback of
branches. This wilting and dieback will typically develop on one main
branch, a sector of the crown, or an entire side of the tree. Chronic
symptoms are stunted growth, yellowish leaves, crispy brown edges on
the leaves, slow and stunted growth, heavy seed crops, and branch
dieback.?
http://www.treesforyou.org/Planting/TreeCare/Healthy/vertwilt.htm
According to GardenSouthwest.com:
?Signs of verticillium wilt include new leaves rolling inwards and
losing their deep-green, waxy luster and becoming dull gray and brown.
Leaf-drop and twig die-back may follow, depending on the severity of
the infection. Tree death rarely occurs, rather portions of the tree
will die and then new growth may develop from dead areas. The only way
to control this disease it to plant resistant varieties of olive such
as Oblonga.?
http://www.gardensouthwest.com/forums/GardenSouthwest/posts/10.html
If you suspect that your olive tree may be suffering from this
disease,the best thing is to get a professional to take a look at it.
I realise that your olive tree is in a pot, but this fungus can
survive in soil for 14 years (at least), so it may be worth checking
out.
Verticillium wilt is a fungal disease that enters the plant through
its roots. It is not limited to olive trees and can attack a number of
different plants and trees.
Treesforyou.org has this information on the disease:
?Verticillium wilt fungus is a sneaky disease, entering a plant
through the roots in the soil. Infections are not obvious like some
other diseases, such as powdery mildew or sycamore blight. Symptoms
can be acute... with leaf curling and drying, abnormal red and yellow
coloring of the leaves, partial defoliation, wilting and dieback of
branches. This wilting and dieback will typically develop on one main
branch, a sector of the crown, or an entire side of the tree. Chronic
symptoms are stunted growth, yellowish leaves, crispy brown edges on
the leaves, slow and stunted growth, heavy seed crops, and branch
dieback.?
http://www.treesforyou.org/Planting/TreeCare/Healthy/vertwilt.htm
According to GardenSouthwest.com:
?Signs of verticillium wilt include new leaves rolling inwards and
losing their deep-green, waxy luster and becoming dull gray and brown.
Leaf-drop and twig die-back may follow, depending on the severity of
the infection. Tree death rarely occurs, rather portions of the tree
will die and then new growth may develop from dead areas. The only way
to control this disease it to plant resistant varieties of olive such
as Oblonga.?
http://www.gardensouthwest.com/forums/GardenSouthwest/posts/10.html
If you suspect that your olive tree may be suffering from this
disease,the best thing is to get a professional to take a look at it.
I realise that your olive tree is in a pot, but this fungus can
survive in soil for 14 years (at least), so it may be worth checking
out.
This info came from "Google answers"