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Disease
1 . Initially leaves are healthy, slowly turn brown and curl up. Finally the flower plants die.
Hi Well I'll need more information to be of help here. What kind of plants are you talking about? Where are they growing in your garden? Give me a lot more to go on and repost.
2 . Every year my Lantana grows from about two feet to about 12 feet and is covered with yellow flowers. This year the leaves have black edges and it isn't blooming at all. It has good drainage, sun most of the day and gets enough water. What does it need?
Hi, Thanks for writing. I'm really sorry, but without being able to see your lantana in person, I can't say for sure what the problem is. This free service really isn't suited for diagnosing plant ...
3 . 1.I saw some of my neighboors use white powder for their lawns - what is it? 2. My peonie have whitish discoloration on the leaves - how should I treat this? 3. Last spring I plant a fig tree in a planter-should I leave it in the planter over winter time outside or it's better to keep indoor?
Hi Well the white powder you probably saw was your neighbor applying lime to their turf. Lime is not a fertilizer, but an element that helps change the pH of soils from acid to alkaline. Depending on...
4 . The leaves on a large section of my ficus hedge have disappeared and left only brown "twigs".What is happening? I have never had a problem with my ficus since planting them over 5 years ago. The Bahamas
It sounds as though some insect may have stripped the foliage off your ficus in this area. If the barren area isn't expanding now, the insect may have moved on, and it would do no good to spray an in...
5 . hello. i am pretty sure an oakleaf hydrangea i bought this past spring has rust. i didn't plant it in my yard but did place it near plants in a flower bed so it would be easier to water as i watered that area. near it i have some variegated ribbon grass that seems to be dying. is ribbon grass susceptible to rust? what about chaste tree? should i toss all that look suspicious?live in south ms-z8 and its been very wet this summer
Hi Well you don't describe what your ill plants look like, but if you know you have rust, that's usually a product of wet, cool weather that will make a plant unsightly, but not kill it. I would remo...
6 . I am wondering if the (diseased looking) black specks on the leaves of perennnals and other plants and black looking spotted leaves on some of my shrubs (as Rose of Sharon) could have been caused by the heavy almost daily rains we have experienced in August and September here in Middle Tennessee? Nothing in my garden looks very good this fall except the impatiens. Thanks, Kay McDonald
Wet conditions certainly are favorable for the development of fungal diseases. Your description of black spots on the leaves of many plants is consistent with fungal leaf spots. It would be wise to cl...
7 . I have a giant pine tree (I think white pine) whose needles are turning brown and dying from the bottom up (over last 2 years). Now a nearby blue spruce is starting to do the same (slightly at bottom). Should I cut down the bad tree to save the other or can I save both? I live mid upstate New York near Oneonta.
Hi Neither of these trees is affecting the health of the other. Both species naturally drop needles as they get older. White pines, for example, always produce yellow needles in the fall. For them, i...
8 . what causes and how can i get rid of the brown and yellow spots on the underside of the leaves on my lemon trees. i live in florida and they are planted outside.
If the spots are on the undersides of the leaves only, they may be scale insects rather than a fungal leafspot. Scale insects also usually gather on the stems themselves. Examine the plant closely for...
9 . Hi, My maple has brown, dry spots on the leaves. It is a small maple. Can you tell me what to do? Thank you, Joyce
Small brown spots on Japanese maple leaves are usually an indication of fungal leafspot. However, when the spots appear late in the season, there's no need to do anything about it other than rake up a...
10 . Why does my rosemary plant that I brought in from outside all summer, now has what appears to be mold on the tips of the plant?
Hi I can't say for sure, but it could me that your plant had some mildew spores on it when it was outside because Powdery Mildew is a very common ailment on all types of outdoor plants during cool, w...
11 . I have a tree gardenia in my home. The leaves are turning yellolw and they are very sticky. I tried the soapy was and that only does good for a couple of days. I'm afraid I'm going to lose it.What can I do to get rid of thid but better still what do you think is causing it?
Hi Sticky yellowing leaves generally indicate one of two common indoor pests: aphids or scale. Aphids can be found at the tips of young stems and look like large grains of pepper clustering together....
12 . how do i get rid of white substance that appears on the leaves of pepper and tomato trees especially under the leaves?
Hi My guess is that your pepper plants have Powdery Mildew, a very common plant fungus, especially on peppers. Mildew is spread via the wind so if any nearby plants become infected, many others will...
13 . I live in north Texas. I have a young Japanese Maple with white spots on the leaves and the edge of leave is curling. It has been very wet here the last month or more. I also have some holly shrubs, the leaves are turning yellow and falling off. Thank you Donna
Both of the problems you describe could be fungal leafspot diseases. Maples, including Japanese maple are susceptible to anthracnose, a fungal disease which causes light tan or whitish spots on the le...
14 . I had rusty spots on a lot of my bushes this year. Everything from a Mock Orange, Roses, Flowering Almond, Spirea and Hydrangea. They are basically all planted on the East and North sides of my house. East side gets about 4 hours of sun each day, North side Hydrangea is not too close to the house and receives sun almost all day. Thanks
Hi You don't say where you live, but my guess is that you had a lot of rain this year. Rust is a fungal disease caused by very wet, moist weather. This should go away if you have a less wet year next...
15 . what is causing Hosta leaf edges to become brown and also the leaves on all of my hostas have small holes what insect would be eating at the Hostas besides slugs.
Hi, Thanks for writing. Has your area seen any harsh weather lately? Hail or very heavy rain can tear small holes in hosta leaves --- this is very common. Black vine weevil is an insect pest th...
Disease
1 . Initially leaves are healthy, slowly turn brown and curl up. Finally the flower plants die.
Hi Well I'll need more information to be of help here. What kind of plants are you talking about? Where are they growing in your garden? Give me a lot more to go on and repost.
2 . Every year my Lantana grows from about two feet to about 12 feet and is covered with yellow flowers. This year the leaves have black edges and it isn't blooming at all. It has good drainage, sun most of the day and gets enough water. What does it need?
Hi, Thanks for writing. I'm really sorry, but without being able to see your lantana in person, I can't say for sure what the problem is. This free service really isn't suited for diagnosing plant ...
3 . 1.I saw some of my neighboors use white powder for their lawns - what is it? 2. My peonie have whitish discoloration on the leaves - how should I treat this? 3. Last spring I plant a fig tree in a planter-should I leave it in the planter over winter time outside or it's better to keep indoor?
Hi Well the white powder you probably saw was your neighbor applying lime to their turf. Lime is not a fertilizer, but an element that helps change the pH of soils from acid to alkaline. Depending on...
4 . The leaves on a large section of my ficus hedge have disappeared and left only brown "twigs".What is happening? I have never had a problem with my ficus since planting them over 5 years ago. The Bahamas
It sounds as though some insect may have stripped the foliage off your ficus in this area. If the barren area isn't expanding now, the insect may have moved on, and it would do no good to spray an in...
5 . hello. i am pretty sure an oakleaf hydrangea i bought this past spring has rust. i didn't plant it in my yard but did place it near plants in a flower bed so it would be easier to water as i watered that area. near it i have some variegated ribbon grass that seems to be dying. is ribbon grass susceptible to rust? what about chaste tree? should i toss all that look suspicious?live in south ms-z8 and its been very wet this summer
Hi Well you don't describe what your ill plants look like, but if you know you have rust, that's usually a product of wet, cool weather that will make a plant unsightly, but not kill it. I would remo...
6 . I am wondering if the (diseased looking) black specks on the leaves of perennnals and other plants and black looking spotted leaves on some of my shrubs (as Rose of Sharon) could have been caused by the heavy almost daily rains we have experienced in August and September here in Middle Tennessee? Nothing in my garden looks very good this fall except the impatiens. Thanks, Kay McDonald
Wet conditions certainly are favorable for the development of fungal diseases. Your description of black spots on the leaves of many plants is consistent with fungal leaf spots. It would be wise to cl...
7 . I have a giant pine tree (I think white pine) whose needles are turning brown and dying from the bottom up (over last 2 years). Now a nearby blue spruce is starting to do the same (slightly at bottom). Should I cut down the bad tree to save the other or can I save both? I live mid upstate New York near Oneonta.
Hi Neither of these trees is affecting the health of the other. Both species naturally drop needles as they get older. White pines, for example, always produce yellow needles in the fall. For them, i...
8 . what causes and how can i get rid of the brown and yellow spots on the underside of the leaves on my lemon trees. i live in florida and they are planted outside.
If the spots are on the undersides of the leaves only, they may be scale insects rather than a fungal leafspot. Scale insects also usually gather on the stems themselves. Examine the plant closely for...
9 . Hi, My maple has brown, dry spots on the leaves. It is a small maple. Can you tell me what to do? Thank you, Joyce
Small brown spots on Japanese maple leaves are usually an indication of fungal leafspot. However, when the spots appear late in the season, there's no need to do anything about it other than rake up a...
10 . Why does my rosemary plant that I brought in from outside all summer, now has what appears to be mold on the tips of the plant?
Hi I can't say for sure, but it could me that your plant had some mildew spores on it when it was outside because Powdery Mildew is a very common ailment on all types of outdoor plants during cool, w...
11 . I have a tree gardenia in my home. The leaves are turning yellolw and they are very sticky. I tried the soapy was and that only does good for a couple of days. I'm afraid I'm going to lose it.What can I do to get rid of thid but better still what do you think is causing it?
Hi Sticky yellowing leaves generally indicate one of two common indoor pests: aphids or scale. Aphids can be found at the tips of young stems and look like large grains of pepper clustering together....
12 . how do i get rid of white substance that appears on the leaves of pepper and tomato trees especially under the leaves?
Hi My guess is that your pepper plants have Powdery Mildew, a very common plant fungus, especially on peppers. Mildew is spread via the wind so if any nearby plants become infected, many others will...
13 . I live in north Texas. I have a young Japanese Maple with white spots on the leaves and the edge of leave is curling. It has been very wet here the last month or more. I also have some holly shrubs, the leaves are turning yellow and falling off. Thank you Donna
Both of the problems you describe could be fungal leafspot diseases. Maples, including Japanese maple are susceptible to anthracnose, a fungal disease which causes light tan or whitish spots on the le...
14 . I had rusty spots on a lot of my bushes this year. Everything from a Mock Orange, Roses, Flowering Almond, Spirea and Hydrangea. They are basically all planted on the East and North sides of my house. East side gets about 4 hours of sun each day, North side Hydrangea is not too close to the house and receives sun almost all day. Thanks
Hi You don't say where you live, but my guess is that you had a lot of rain this year. Rust is a fungal disease caused by very wet, moist weather. This should go away if you have a less wet year next...
15 . what is causing Hosta leaf edges to become brown and also the leaves on all of my hostas have small holes what insect would be eating at the Hostas besides slugs.
Hi, Thanks for writing. Has your area seen any harsh weather lately? Hail or very heavy rain can tear small holes in hosta leaves --- this is very common. Black vine weevil is an insect pest th...
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