Hibiscus plants

QuestionHibiscus plants have white cotton-like growth on stalks near the blooms. The flowers do not develop. What is this disease and how do I treat it with a natural product? Thanks for your hel Answer

kwanzan cherry and weeping cherry

QuestionWeeping Cherry tree QUESTION: I have attached pictures of my kwanzan cherry and weeping cherry. I dont know whats wrong with them and wish to know how to treat them. Please help, I live in Macedon,NY.

water oak trees

QuestionTwo of my water oak trees have developed many brown spots on their leaves. This is the first time to happen... is this a disease, and if it is, what can I do about it? Thanks a lot. AnswerA very common leaf

Autumn Blaze maple leaf disease

QuestionLive in Des Moines, Iowa. Was looking at otherwise healthy leaves on younger maple tree and noticed small, wart like growths on the botton side of some of the leaves. About the size of a beebee or smaller, b

MY HIBISCUS

QuestionWE LIVE IN SOUTHERN FLORIDA & AS OF EARLY THIS R. WE HAVE HAD SHRIVELING OF THE LEAVES AROUND THE BLOOM WHEN IT FIRST COMES OUT.THE BLOOM NEVER COMES OUT FULLY & DIES. ALSO A WHITE POWDERY SUBSTANCE IN THE M

magnolia tree disease / insect

Question magnolia Hi, I saw a similar question about white blotches on the stems of a magnolia tree in PA. You mentioned it may be insects but required a picture. I attached a picture. Can you tell me what it

Black fungus-like stuff running down Maple trunk

QuestionQUESTION: A few weeks ago, I noticed what at a distance looked like someone spray painted some black vertical lines which ran down the trunk on one of the Maples in our planting strip by the street. I

mugo pine, branches turned black

QuestionI have 2 dwarf mugo pines, both are exposed to the same elements and light. One of them all the branches have turned black? What is it? And how do I treat it? AnswerJanet: The black materi

Ginko Tree

QuestionMy Ginko Tree has the leaves brown I dont know if is too much water, is usually watered every 3 days but we had a lot of rain during June and July, when rains we dont water them the trees are like 5 feet hig

boxwood

Questionboxwoods have long brown raised ridges on branches that come off with a finger nail. Leaves are falling(a lot), in zone 5 MO/KS area AnswerHi Alex, It sounds like scale of some kind. They suck on the

Aspen trees

QuestionI have a rental house in Sandy, Utah with 4 Aspen trees in the front of the house. They were there when we bought the house 10 yrs ago so Im guessing theyre about 15 yrs old. One of the trees has no le

golden raintree

QuestionQUESTION: quick browning of lantern shaped pods, sporatitic yellowing of leaves and defoliation of tree. planted in island of highly traveled road, over irrigated, poor soil with rock bed for drainage and ot

Mission Fig Tree

QuestionHello Dr. Vann: I live in southern San Diego County and have 3 fig trees, 2 of them are some sort of greenish fig (very fresh and earthy tasting, not too sweet), the 3rd is a black mission fig. For so

Aristocrat pear trees

QuestionI planted 4 Aristocrat trees in my front yard, and 1 of them has leaves that look like its fall and their changing color, but there not falling off. They are red in color and look just like the season is cha

sick leucothoe

Question sick leucothoe I saw your email on a website as I was looking for solutions to our coast leucothoe problem. We planted these early this summer. They are in a mostly shady area and look as though they

Disease or bug on Creape Myrtle?

QuestionI have 10 Crepe Myrtle around my pool. I planted them 10 yrs ago. They have always done well. This yr. in NJ we had a lot of rain in June. I have recently noticed white fussy and powd

Victoria plum tree disease

QuestionWhen the fruit is well formed , a scale appears on some fruit, also a drop, or two, of gelatinous liquid forms at the bottom of some fruit. But worst of all, as the fruit grows larger it turns a dark blue co

White waxy dot at base of ficus leaves

QuestionI live in Alaska and several months ago received my first indoor house plant. She is a ficus and Im not sure what kind. She has been doing just fine and actually looks better than when I received

pear tree dying

Question1 have a cleveland pear tree, that the leaves are dead, dont know what to do with it, last year it was just beatiful, when 1 break the small limbs , they break right off. will it come back next year th

Mature healthy carrotwood in L.A. oozing black from major limb

QuestionQUESTION: New in past few weeks: black stain on lowest and major horizontal limb of huge, beautiful ~40 yr. old carrotwood, centerpiece of my parents back yard in L.A. Black sap oozing up out of conica