Killing a Black Walnut Tree with Roundup? Area contamination?
iowariver
5 years ago
last modified: 5 years ago
Featured Answer
Sort by:Oldest
Comments (39)
Toronado3800 Zone 6 St Louis
5 years agoRelated Discussions
black walnut tree killing spruce trees? help please.
Comments (5)Some trees will grow next to walnuts - see link below. I planted a few acres of walnut seedlings in one area of my reforestation project and used the list to determine which trees I could mix with the walnuts. I planted a lot of oaks, redbuds, and red cedars mixed in with the walnuts to add some variety, but several others will do fine next to them as well. Another option would be to remove the walnut tres and replant the spruces. I've read the juglone lasts 2-5 yrs in the roots/soil after the tree is killed so the new trees may get off to a slow start until the juglone totally fades away. john Here is a link that might be useful: Walnut Trees...See MoreCan Walnut trees (via juglone) kill Bald Cypress?
Comments (8)An update: I went back the the area to re-evaluate the problem areas. We actually have several walnut trees on the perimeter of the bald cypress grove we are trying to establish. There are several on the north side, one on the south side and a couple on the east side. In all cases, most of the bald cypress/dawn redwood whips and B&B trees have died under those walnut trees. Almost all other B.C./D.R. have lived in other areas not directly next to/under the walnut trees. The death sometimes takes a few years. It seems clear to me that the walnuts are the problem. I just wanted to verify that with some study that may have been completed and published somewhere, but there seems to be nothing documented on the subject....See MoreWalnut / Black Walnut Trees
Comments (63)Maureen, I would recommend contacting your extension agent or local forester for more information on who you might contact for potential removal/purchasing. Trees grown in yard or farmstead settings - unless carefully managed - will likely not attract a great deal of attention from timber buyers due to potential for old nails, wire, etc that may exist under in the tree. I'm in west central WI and had 4 20"+ Black Walnuts we needed to remove last year and we couldn't give away the trees (the trees were farmstead trees/woodland bordering trees). A local timber buyer had zero interest - even in just giving them away - nor did anyone want them for wood burning. We did end up giving some chunks of the logs away to friends though who wanted some for woodworking. While I like Black Walnuts in general, I do not like them in a yard setting as a selection of other plants are not tolerant of the junglone (basically a natural herbicide of the BW) produced from the seeds, roots, and leaves. Good luck!...See MoreCan this tree be a Black Walnut
Comments (9)Thanks for the insights guys/gals. The overwhelming consensus is--not a Black Walnut. Background: In 2013 I planted two northern red oaks--bare root from Arbor Day. The ground in that area is all clay--I had to put down the shovel and use a pickaxe to create the hole. I watered them and the trees did fine for the first month and then started going down hill. In response, I increased my watering--but both died in August of that year. In the spring of 2014 I planted a potted 1" caliper crimson king Norway maple with the same results. Late last summer I planted the 0.5" caliper sugar maple and it did fine and only recently died. The only three explanations I see are: (1) The clay ground is acting like a tub and thus the trees are constantly in wet soil (2) I am not watering enough--even though I think I am not (3) Fertilizer or weed killer from the somewhat new house at the top of the hill is washing down and into the tree holes (tubs given the clay). About 7 feet away from where I lost the sugar maple, a mature (about 20+ feet tall) spruce tree died two years ago--went real fast too. That's why I think some sort of chemical could be the culprit. A green giant arb has had some growth issues in the area as well--but seems to be getting better. Any thoughts? Thanks!...See Moreiowariver
5 years agodavidrt28 (zone 7)
5 years agolast modified: 5 years agohenry_kuska
5 years agolast modified: 5 years agodavidrt28 (zone 7)
5 years agolast modified: 5 years agohenry_kuska
5 years agolast modified: 5 years agoMike McGarvey
5 years agohenry_kuska
5 years agohenry_kuska
5 years agoUser
5 years agoUser
5 years agodavidrt28 (zone 7)
5 years agolast modified: 5 years agodavidrt28 (zone 7)
5 years agoUser
5 years agohenry_kuska
5 years agolast modified: 5 years agoUser
5 years agolast modified: 5 years agohenry_kuska
5 years agohenry_kuska
5 years agoHU-595486933
5 years agodavidrt28 (zone 7)
5 years agolast modified: 5 years agodavidrt28 (zone 7)
5 years agokimmq
5 years agodavidrt28 (zone 7)
5 years agolast modified: 5 years agosam_md
5 years agoHarvest (zone 5)
4 years agojoeinmo 6b-7a
4 years agoblakrab Centex
4 years agolast modified: 4 years agoHarvest (zone 5)
4 years agolast modified: 4 years agoHarvest (zone 5)
4 years agolast modified: 4 years agobrandon7 TN_zone7
4 years agolast modified: 4 years agoblakrab Centex
4 years agohenry_kuska
4 years agodavidrt28 (zone 7)
4 years agolast modified: 4 years agoHarvest (zone 5)
4 years agoblakrab Centex
4 years agolast modified: 4 years agodavidrt28 (zone 7)
4 years agolast modified: 4 years ago
Related Stories
GARDENING GUIDESAn All-Star List of 10 Shade Trees to Plant This Fall
These tried-and-true varieties offer good-sized canopies, seasonal interest, wildlife benefits and more
Full StoryARBOR DAY10 Trees Landscape Designers Love
In honor of Arbor Day, consider adding a beautiful and beneficial tree species favored by designers around the country
Full StoryGARDENING GUIDESGrow Your Own Privacy: How to Screen With Plants and Trees
Use living walls to lower your home and garden's exposure while boosting natural beauty in your landscape
Full StoryFALL GARDENING11 Trees for Brilliant Fall Color
Give your landscape the quintessential look of autumn with the red, orange and yellow leaves of these standouts
Full StoryFALL GARDENING5 Ways to Put Fall Leaves to Work in Your Garden
Improve your soil and yard the organic way with a valuable garden booster that grows on trees
Full StoryGARDENING GUIDESGarden Myths to Debunk as You Dig This Fall and Rest Over Winter
Termites hate wood mulch, don’t amend soil for trees, avoid gravel in planters — and more nuggets of garden wisdom
Full StoryLANDSCAPE DESIGNSmall Garden? You Can Still Do Bamboo
Forget luck. Having bamboo that thrives on a wee plot just takes planning, picking the right variety, and keeping runners in check
Full StoryLANDSCAPE DESIGN10 Ideas for a Creative, Water-Conscious Yard
Check out these tips for a great-looking outdoor area that needs less water
Full StoryGARDENING GUIDES9 New Plants With Spectacular Foliage Color to Try in 2018
Choose among top shrubs, small trees and perennials with leaves ranging from bright chartreuse to deep purple
Full StoryKITCHEN DESIGN9 Ways to Save on Your Kitchen Remodel
A designer shares key areas where you can economize — and still get the kitchen of your dreams
Full Story
sam_md