Avatar_medium Delaware Cooperative Extension

This group is used to manage 'Ask an Expert' for the University of Delaware (https://www.udel.edu/extension) and Delaware State University Cooperative Extension (http://www.desu.edu/cars/cooperative-extension) jointly.

(This group currently has 18 experts available to answer questions)

Questions asked to this group

Strange growths on tree In White Clay Creek

I saw this on a tree on the Pennsylvania side of the WCC park, just past the border. Was wondering what it is or if it is invasive.

New Castle County Delaware tree fungus tree growth Posted about 1 month ago

Dog fennel milsboro

I need some advice, I need to clear 6 acres of established 30 inch plus dog fennel In Millsboro . Will this be possible and how long will the project take to accomplish the result is for use as equine pasture

Sussex County Delaware pastures and forages dog fennel Posted about 1 month ago

Nut trees for Delaware

Hi. I’m interested in planting a nut tree(s) on my property in Hockessin but I don’t want to plant a Black Walnut because of its negative impact on surrounding vegetation. What other types of productive nut trees can be grown in Delaware? Are we too far north for Pecans? Are their lesser known nut trees that are full size other than Black Walnuts that I might be overlooking? Any help you can give me would be greatly appreciated. Thank you.

New Castle County Delaware nut trees trees Posted about 1 month ago

What kind of snake

Would like to know what kind of snake is this and how big do they get. Thank You

New Castle County Delaware Posted about 1 month ago

Compost in the winter

We have a compost bin that we have been collecting food waste in all summer and we are here only for the summer. The compost is not ready yet so I would like to leave my compost tumbler to sit. Will it be okay to sit through the winter (in Delaware)? Would it be better to leave it on our shed or outside? Here is a link to the tumbler we have. https://www.lowes.com/pd/RSI-Tumbler-Composter/1000678051?cm_mmc=shp-_-c-_-prd-_-sol-_-google-_-pla-_-106-_-sosgardenhardlines-_-1000678051-_-0&placeholder=null&gclid=Cj0KCQjwzbv7BRDIARIsAM-A6-0uoO8tJkuEmhQlMRhaRFJ2GJe1Qg_-WNxMMUhIoY04R_Cb393TPAoaAtrsEALw_wcB&gclsrc=aw.ds

Sussex County Delaware Posted about 1 month ago

Volunteers in flower beds

Could you please identify these plants ? I need to know if I should get rid of them...or dig and move them...

Kent County Delaware Posted about 1 month ago

Botrytis on peonies

Hi, sorry if this is a duplicate question, network trouble. 2 photos attached. On the close-up, can you confirm that this is botrytis, or do I need to bring in a sample for analysis? I'm treating it as such, cutting the plants down for fall and disposing of the debris safely. On the second photo, the brown and yellow plants are all peonies, 6 in all. Are they too close together? Do I need to dig some up to make space or can I just cut back some stems in the spring? Thank thou.

Sussex County Delaware peonies botrytis Posted about 1 month ago

Top dressing and reseeding a lawn

Dear Cooperative Extension: What should use to top dress my lawn this fall? I was thinking of using Leafgro for the top dressing, or is it better to use topsoil, or a mixture of the two? I have regular fescue (cooler weather) grass and trying to get rid of the clover, by digging it out and/or using IronX. This is leaving patches with no grass or thin grass that I want to reseed, along with top-dressing the whole lawn to give it more organic matter. I live in Silver Spring, MD and did a whole battery of soil testing through your office in 2017. The soil pH was in the optimal range (around 6.8 on average across the front and back lawns); while the P, K, Mg, and Ca were all in the excessive range. The organic measured 10.6% in the front lawn and 8.2% in the back lawn. Thank you!

Montgomery County Maryland Posted 2 months ago

Miss kim lilacs with brown spits

My miss Kim lilacs are looking bad. The have brown spots and i was wondering if there's any hope on saving them, or what i could do. Any help would be greatly appreciated. Thank you

Sussex County Delaware lilac bushes Posted 2 months ago

Norway maple

I hope these photos of our Norway maple that has wood borers will help you in your assessment? Thank you !

Sussex County Delaware Posted 2 months ago