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Extension experts at Utah State University Cooperative Extension

(This group currently has 1 expert available to answer questions)

Questions asked to this group

Brown tips on rose leaves

I live in Utah. We've had excessive rains for months. Some plants have brown tips on the leaves. I use systemic treatments every 6 weeks. What do you think is causing the browning?

Utah County Utah Posted 5 months ago

Apache plume won't go to seed

I have had an apache plume for 4 years. Every year it flowers, but never produces any seed. We live on the Chinle layer near Zion, so do have a good amount of clay in our soil. However, the plant itself seems healthy. Any idea why it won't go to seed?

Washington County Utah Posted 5 months ago

Weeping Alaskan cedar

My Alaskan weeping cedar has slowly delevoped a yellow/brown middle branches and I noticed what look like tiny bugs on the leaves. We have had them planted 10-11 years ago. The two on the front yard are watered by spray sprinklers and the one on the back yard we use a drip system. The two on the front yard are unhealthy and the one with drip system is doing great. Could water be the problem? I also noticed that the lower branches are developing roots. Should I cut them out?


Salt Lake County Utah Posted 6 months ago

Garden soil organic matter = 5%, but raised bed organic matter = 50%? Why?

Hi there, Why is it that for garden soil it's recommended on have no more than 5-8% organic matter, but then for raised beds the recommended recipe is to use 50% compost. I understand why you want to limit the amount of organic matter in garden soil (soil can have too much phosphorus, compost is high in salts, etc). But then when look at university publications on raised beds, I'm seeing recipes the recommend anywhere from 35-50% compost. How do crops in raised beds not suffer from the same negative effects of too much compost that crops planted in traditional garden beds do? Thanks so much. Bethany

Utah County Utah Posted 6 months ago

Lambert Cherry tree near death

We have a 25 year old Lambert cherry tree with two large trunks. This summer, The west half is completely dead and the east is 1/2 gone. The soil is a Utah Lake Bonneville "Quick-silt" collapsible silt clay that farmers don't bother to grow crops in. Now we see why. It is alkaline and when dry in its native state can "stop a pick" The soil won't let the roots absorb iron. a ph meter read about 7.5 [a low cost stick probes in the soil type meter]
We have gotten hundreds of pounds of cherries off this tree. When it had brown leaves in areas we watered it too much. We were told it had Iron Deficiency Chlorosis

We have sprayed 3 times last year and this year with "EDDHA Iron Chelate 6.0%" by Growmore. That has helped. We recently applied an Iron Sulfur product to soil "Iron Plus Soil Acidifier by Hi Yield co. This is 11% Nitrogen , 13% Sulfur , and 16% Iron. [not chelated Iron] Applied at about 2 pounds per 100 square feet.
The cherry leaves look dark green and healthy except now they have a 1 millimeter brown edges.
I was told at the nursery that the brown edges are caused because the roots can't keep up with the leaf demands. I will water more and deep.

We also put in some "Iron Tree Treats" by Biacor Co. 4.5% Iron. We drilled 3/8 inch holes in the trunk about an inch deep and pushed 7 plugs. in 7 holes.

Question 1: Brown leaf edges . will send photos tomorrow.

Question 2. Nursery man said tree has Coryneum blight One upper trunk has a dozen holes with sap extruding out. On ones side. Is this Coryneum blight or shot hole borers? I could carefully cut one open and see if there is a borer.

Thanks Gary Wallace Delta Meta Solutions R & D

Update: There are a dozen large sweet cherry trees in the neighborhood. they are all healthy. Why is mine so sick?
Will send photos tomorrow, I will try some foliar spray on leaves.








Utah County Utah Posted over 1 year ago

Mushrooms are they safe to eat

We have a lot of mushrooms that grow in our yard are they poison or safe to eat ?

Salt Lake County Utah Posted over 1 year ago

Cocoon

Any idea what this is?
Thanks!

Utah County Utah Posted over 1 year ago

Mayday. Motorhome.sinking.

We will be talking about an elm tree . Chinese Elm I do believe . Me and my wife unfortunately I had to moving to a motorhome I due to medical problems we found a mobile home RV Park and we've been here for almost 4 years . We were issued a lot to park on as I backed the motorhome under a tree I noticed it didn't look very healthy . As healthy as the others around it basically in the park . Everything's been going good but nobody that has lived here permanently ever brought up any kind of explanation about the tree that it was sick or it's just been dying offer or anything of the sort so we didn't think much of it after that . Last winner here in Layton Utah was very mild hardly any snow no rain fall like weather all through winter . Around the end of December 2017 I noticed spots of blood on my pillow case and found out I was being eating up bye noseeums . So I've been fighting with them ever since still am but very very very pretty much spring came quick then it got hot then it went back to Spring so it's been a yo-yo . We've noticed last month changing the tree and a change in the RV . This thing has been puking something because it is dying . It has yellowish nasty looking snotty sap and right next to that coming out of where the branches start from the top of the trunk green slimy sap . . In our RV ceiling is starting to tint we have sap lines going down TV screens windows walls brand new microwave . After we bought the RV and during the time selling the house I had a year to remodel bring it up to date and it looked damn good flooring Cabinetry New Theater you name it I rebuild it . I wouldn't give a dollar fifty for this damn thing right now . This sappy stuff whatever it is is covering everything it leaves a slippery like you just put hand lotion on all over everything eating utensils plates bowls you name it it's there . I am now yanking the cabinets part because it got into the oak doors and drawer facings . I guess what I'm asking is I need some help in cleaning it up or is it unhealthy for us to live here or All the Above I would like to clean it up just rebuild the damn thing and get the heck out of here . Just sappy stuff came down so heavy and even got into the wiring and ignition of the engine so I have to go into that and deal with that mess . I guess what I'm asking is I want to know what it is and the best way to clean it up maybe how to stop it from doing it the tree . I can't believe when we backed her in the lot it look like a million bucks now it looks like a million beep beep . I'm a 62 year old disabled veteran this is a 37 foot motorhome I need the easiest way for the easiest chemical to use to get this thing done . I do thank you very much I'll give you my email but my phone number if you need to call is 801 8 3 7 7 1 4 7 thank you

Davis County Utah Posted over 1 year ago

will aphids kill green ash trees

I have 3 Ash Trees, 2 green 1 white all are laden with aphids. Will a severe Aphid attack
kill an ash tree? Recommended action?

Utah County Utah Posted over 1 year ago

Falling branched

How long before dead Colton branches fall

Davis County Utah Posted over 1 year ago