Sunflower question

QuestionI am growing sunflowers and some leaves have brown discoloration and some seem to have holes. What is the best treatment for insects or diseases that might be causing this? Thank you for your help...as I am

Psocids

QuestionDear Dr. Vann, I have a Gumbo Limbo and one of the branches show Psocids activity. How can I treat it? Thanks, and best regards, Rick AnswerRichard: It is my understand that no treatment is required in y

Blood Orange Dwarf Tree

QuestionWe live in Henderson, Nv and have a Blood Orange Tree, it is growing just right and will have fruit this year, but the new growth coming in do not look right the leaves are curled. We have about 4 or 5 orang

Blaze Maple

QuestionQUESTION: Our autumn blaze maple was planted in our yard three summers ago. The last summer and this one, the leaves have already started turning colors. They are not green now and when they did

white cocoons on undersides of hollies

QuestionI recently read a question by another person concerning the same dark powder (almost black) on the innermost leaves of my 20 holly bushes (have had these bushes many years). I also have the same small white

Pin Oak slime flux

QuestionHello,and thanks so much for taking my question. I have a pin oak trunk size about 35 dia. I found a small hole about 3 ft off the ground. The hole is about 2 dia, it was ozzing what I thin

Shrub looks like its dyeing

QuestionHi. I have an older shrub that has gotton some tiny white patches on some of the limbs. There are also some strange brown things attached to some of the limbs about 1/2 long and have a layered lo

Pecans

QuestionHi. I have an older pecan tree that has dopped its pecans. In opening several of the nuts I noticed they were a strange red color. I do not think this is normal. There was also some k

Looks like mould

QuestionHello , I have a large 10yr old acer and I have noticed , what looks like white mould/powder on the stem , what do I need to do to stop it . Many many thanks , Donna . AnswerHi Donna, If the white, powdery

schefflera arboricola

Questionmy mother has a schefflera that she got about fifteen years ago and up until a couple of years ago it was healthy.about two years ago small(1/8in or smaller)white spots began to appear on the leaves just a f

autumn blaze maple

QuestionWe bought an autumn blaze maple last year and it has done good until recently. I noticed there is a split in the bark on the west side of the tree and part of it is gapping open. The leaves are a

Tricolor beech tree problem

QuestionI have a tricolor beech tree, about 5 years old now. Its been a wet spring in Missouri but have noticed that all of the leaves have curled and look sickly. Can you tell me whats wrong with it and

Black splotch inside orange

QuestionI peeled a perfect looking naval orange to find an area of about an inch that was completely black, next to the inside of the skin, about an inch from the navel portion. We have never seen this inside

Brown Spots on Hydranga Leaves

QuestionWhat can I do about brown spots on my two Hydranga plants? One plant is a year old. The other plant is at least seven years old. The small spots are in various places on some leaves. The large spots are on

plum tree disease

QuestionDear Dr Vann, We have two plum trees. A Stanley and a Toka. The Toka plum tree has small greenish egg like things on the under side of the leaves and there are teeny tiny little flies all o

Powder mildew

QuestionIs powdery mildew curable? We have used fungicides, Plant Sheild, Cease, etc. We thought we were rid of it but it comes back every Spring with a vengeance. We even had an Arborist spray. &n

Red Maple

QuestionHI I have a 10-15 yr old Red Maple thet has no leaves on it. I do not know when all the leaves fell off. The braches are dead and have some moss on them. The tree has white spots all over the trunk.There is

meyer lemon tree fruit

QuestionMy meyer lemon trees fruit look like something is eating the outer layer of the fruit. Almost looks like small scrapes all over it. How do I correct this? Thank you for helping me. AnswerSmall scrapes on t

crabapple fire-blight

QuestionI have a much beloved crab in the middle of our small garden, and for the past four years it has had fire-blight. I want to do everything I can to save it. My neighbor has just cut down all three of

crabapple with fire-blight

QuestionI have a much beloved crab in the middle of our small garden, and for the past four years it has had fire-blight. I want to do everything I can to save it. My neighbor has just cut down all three of