pythium in dwf. mondo

QuestionI have a customer whose front yard is all dwf. mondo and it is in filtered sunlight. Recently her mondo grass has been browning up and you can pull the dead leaves easily away from the crown similar to dampi

Dogwood Tree Leaves are firing

QuestionDogwood leaves QUESTION: Dear Dr. Vann, I have another problem with another of my dogwoods. This one is approx. 4 in diameter. Its leaves look like they are dying. I have attached a

100s of Black Beetles on Oak Tree Bark

QuestionHi, I went out to water my young (<10 yr old) Oak Tree and I was shocked to see 100s of black beetles no bigger than 0.5 - 1.0 cm climbing all over the lower bark and around the tree. Are these harmful

mundo grass

QuestionI have a large area of mundo grass that has been healthy for 25 years, now it is all turning yellow on the tips and is easily pulled up without any effort. I think it may be a root fungus. If it is a fungus

Chanticleer Pear

QuestionQUESTION: I have a Chanticleer Pear tree that is about 30 feet tall. Last year I noticed that part of the very top of a couple of the main leaders were a pale yellow and sparsely leafed all summer long. This

Trunk fungus? or peeling bark - pink dogwood

QuestionWe have a pink dogwood tree in our backyard. Its leaves show no sign of anthracnose or any other disease described on any internet article I have read, however, the bark on the trunk is peeling away. Our loc

lilac disease

QuestionI live in Alabama. My lilac was doing great all summer but now the veins in the leaves is dark, what is causing this & how do I treat it? AnswerDear Michelle, It sounds like your lilac has iron chloro

Chinese Pastach Tree

QuestionMy Chinese Pistachio Tree was planted about 13 years ago and is now approximately 18 feet tall. The last couple of years I have had a lot of limbs dying. I do not see any insect or scale on the tree. I do no

Storm damaged Maple tree

Question Maple tree During a recent rainstorm in NJ, a branch section of a very large and extremely tall maple broke off. The large fallen limb is hollow on the inside and rotten in some areas. The tree is situated

Sick Desert Rose

Question Desert Rose Hi, It looks like my desert rose is dying. Its in a clay pot with quick draining cactus soil. II only water it when it is dry. It is getting about 4 hours of after noon sun. It has

Plumeria...spots on leaves

QuestionThe one plumeria that survived this past winter has brown/black spots on some of the leaves (sorta like black spots I occasionally see on leaves of a rose plant). What might this be and how should I tr

Euonymus Plant Disease

QuestionDr. Vann, I have 4 euonymus plants fully grown on my property in Long Island, New York. They are all more than 10 years old. They have been fine until recently. Now in the last 4 weeks, all 4 of them have s

Westmont Arborvitae

QuestionI planted two Westmont Arborvitaes about a month ago & have been watering them daily. I noticed recently that they are turning brown in the interior of the plants. the outside is mostly still gre

philodendron

QuestionMy plant drips. It had a great deal of white mold on it so I hosed it off and sprayed the leaves throughly with a house plant spray as I thought it might have a mite on it, but it still is dripping. The mold

disease on tibouchina granulosa

QuestionOne of the two main branches on my tibouchina tree died and I had to cut it off. I noticed the trunk has splotches of a greenish gray crusty stuff all over it, which can be peeled off. Is this gr

maple tree tar spot

QuestionI have a small maple that i have grown since about 6 inches tall and is now maybe 10 feet tall. Every year i have had tar spot as i have discovered. Can i remove the leaves myself to stop it from coming back

Willow tree fungus?

Question Im in York, Pa and just recently noticed these red rubbery feeling spikes coming out of the willow trunk. Its all the way up the entire tree. The willows about 3 yrs old. AnswerThese are the frass

Plum tree

QuestionMy plum tree has many sap like formations on it and the branches that these formations are on appear to be dieing. There is also a formation on the trunk. Do you think this is an isect infestation? AnswerHi

Honeysuckle vine trouble

QuestionHello Im having the same problem with my honeysuckle in that the leaves are turning brown / yellow and falling off. The advise you gave (I believe) was a fungicide. Is there a non toxic version that I can wh

PECAN TREE

QuestionWHAT CAUSES MAJOR LIMBS TO FALL TO BASE , FOUND A SMALL BUG UNDER BARK A LITTLE BIGGER THAN A PIN HEAD WITH FANGS THIS IS A MATURE TREE APPROX 60 FT TALL &nbs