Brown spots and curling leaves on Avocado
Avocado None Given
I've had this plant for 9 months at least. I first noticed leaf tip curling on the plant maybe a few months / a month ago. However that is not my main concern; I'm more worried about the small brown spots that have recently developed within the last 1-2 weeks. They are just small brown spots but they have spread throughout the entire leaf, and there are two more which are nearly completely brown, and the sides are curling. It has spread even to the small newly sprouted leaves and I'm scared the same thing will happen to them.
I water once a week (maybe a bit too much, just checked the soil its fairly damp). I don't give it extra nutrients in particular. The plant has 18 leaves with 15 leaves affected to varying degrees. When I touch the leaves, I don't notice anything on my fingers, and it's alot worse on the bottom than the top. I don't normally spray it -just today.
I really don't want to lose this plant and I don't know what the problem is. Should I repot it?
I water once a week (maybe a bit too much, just checked the soil its fairly damp). I don't give it extra nutrients in particular. The plant has 18 leaves with 15 leaves affected to varying degrees. When I touch the leaves, I don't notice anything on my fingers, and it's alot worse on the bottom than the top. I don't normally spray it -just today.
I really don't want to lose this plant and I don't know what the problem is. Should I repot it?
one leaf with the problem
Posted
by: Rahul
(1 point)
Posted: March 25, 2016
Answers
I think this is oedema, which is a physiological stress and not an infectious disease like a fungus. I do not think it is an infectious diseases because the plant is indoors and not near other avocado plants that are diseased.
I think it is stress from being in a small pot. If you take it out of the pot you might find it is root bound (the roots are growing to the side). Put it in a large pot.
All plants can be affected by oedema which is caused by overwatering or high humidity. It seems you water too much. When you change the pot make sure you have good drainage. You can put some stones in the bottom of the pot.
I think it is stress from being in a small pot. If you take it out of the pot you might find it is root bound (the roots are growing to the side). Put it in a large pot.
All plants can be affected by oedema which is caused by overwatering or high humidity. It seems you water too much. When you change the pot make sure you have good drainage. You can put some stones in the bottom of the pot.
Posted
by: David Hughes
(67 points)
Posted: March 25, 2016
You need to log in if you'd like to add an answer or comment.
I would like to see a photo without the strong light coming through the back of the leaf. Taking an image of the leaf from the top. There is a leaf in the background that looks like it has silver/white areas. Also, rub your finger across the disease areas. Do you see any thing on your finger? Some white material? Also, do you spray water onto the leaf. Finally, how many leaves of the plant are infected and are the leaves on the top more infected than leaves on the bottom? about 8 years ago.
I think for picture first of the left reflect the damage the use of some pesticides a privet herbisticides and there difference between them and other pictures that appear in which plant pathology spots about 8 years ago.