disease of mature hybiscus

QuestionI have four mature hybiscus trees which had reached a height of 5-6 ft.Last summer a landscaper pruned them to 2 feet! Now I hfind that the new leaves and flowers appear as shriveled growth which dry u

Oak Wilt

QuestionHi Dr. David I live in a large wooded area in a neighborhood called Oakwood Hills. Needless to say I am surrounded by oak trees. I have 3 oak trees that are dying , a branch at a time. I assume that the prob

Defoliated trees

Question55 of my mautre peppercorn (Schinus areira = Schinus molle var. areira) trees were defoliated by a spray of 680 ester herbicide, they look dead to me, but the doer says they will recover. Any chance he is te

peach and apple trunks

QuestionMy peach and apple trees have some sort of problem with the trunks. The bark has split and peeled away, sap is oozing and it looks like the wood is rotting. I have photos I can send but I dont see an optio

Sick Dracaena

QuestionHello David, I have a very sick Dracaena. The leaves turn yellow and then brown, I have pulled these off. While there is new growth at the top I am afraid that it is sick. I do have picture

Fungi

QuestionBogie had mites that we solved with you help. Now the same plant appears to have a fungi, black spots on the leaves and both flowers and leaves falling from the plant. HELP! thanks joe AnswerHi Joseph... Ma

Large Knot on Tree

QuestionI have a very large knot on a tree on our creek property. Some of the bark is loose, but most is solid. Can I send you pictures so you can help me determine what I should do about it? AnswerIt w

Deodara Ceder

QuestionHi John, my problem is my neighbors deodara cedar has been dropping its needles on my roof for years and for years I have been removing these needles. The needles collect in the roof valleys. After cleaning

white leaves

Questioni recently bought a rosemary plant.the leaves where ok but a little pale.now it is covered in small (pinprick) pale white dots.the mint plant next to it has now got the same and looks pale washed out and b

cottony cushion scale on acer

QuestionDear John, i love in rome (italy) & have cottony cushion scale on my acer. what is the best way to treat this pest - speaking on the phone with my dad, before knowing what creature this was, suggestid

Jade with some kind of disease

QuestionI have about 8 Jades in my bow window & various other plants the big jade is about 25yrs old. Overnight it seems like they are covered in big black spots & leaves are dropping off quickly. What is it? Could

Lilac Bush Leaf Curl

QuestionI have a lilac bush that looks great until it blooms, then the leave turn dark greenish/brown, dry looking and curl (toward the back of the leaf). I thought it might have been the water in NJ, but I dont thi

Clivia infestation

QuestionI have (what I think is known as) a Clivia: Long dark green leaves with beautiful red (mine is) blossom. I know them as the south african plant. I have got what looks like millioons of tiny minute insects in

gardinia plant

QuestionI have a 4ft potted Gardenia plant since last July. It has been indoors since Nov. due to frost. This week I have noticed a spiderweb-like substance on the top where each bud would be and microscopic white b

lemon tree worm and wierd things

QuestionHI, My indoor lemon tree has lots of tiny yellowish worms on it, but what is weird is there are also these popcorn things all over too. Some of them are small, some are almost a half an inch! The whole tree

1/16

QuestionQUESTION: Truthfully Im not sure whether this infestation is the fault of the dwarf banana tree and three children thereof in my office or just my habit of eating while I work, but would appreciate any sugge

English Ivy Deficiency

QuestionMY English Ivy plant is not growing as it should. It starts to branch out and then the end just dies and stops growing. Is there a shortage in a certain nutrient? AnswerHi Stephen, I am not clear on what i

Robellini disease

QuestionIndividual leaves on Robellini have turned brown. Double robellini...one plant is healthy. South Florida location AnswerI assume since you live in S. Florida that the palms are in the ground. I would

Peach tree problem

QuestionI am a landscape designer in Mesa, AZ. I have a client who has a peach tree in his yard that has been healthy and fruitful for about 6 years. The trunk and several branches have become covered with a thick,

Jasmine Tree

QuestionI have a jasmine tree in my yard, its been in the ground about 8 months. I am trying to remember the type of jasmine, but cant remember the exact name. Its one of types that alot of tree farms had to get rid