Shrubs under black walnut
shadey
19 years ago
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walnutgrove
19 years agoRelated Discussions
holly shrubs w/ black walnut?
Comments (5)Thanks to all of you for your updates, and for for future ones too. There are lots of ambiguous lists out there for tolerant plants, because of the variety of growing conditions, management, etc. Water is a major issue under black walnut trees, they are very thirsty! The competition is far to much for a neglected sapling or shrubling. Keep those Messervae hollies well watered their first years as suggested, and during any long dry spell. Water slow and deep, so that the roots really spread out. Ill take some cuttings (or layer rather) of my blue princess and China girl and try them out under driplinE. I um, planted mine well outside it....lol A mature walnut creates a perfect dappled shade for so many great plants. Ibe come to really appreciate them. Sweetshrub, spicebush, hemlock, dogwoods, Hosta, bulbs of all flavors, ferns, yarrow, monarda, japanese maple, beauty berry, etc etc. oh carolina silverbell. I’m forgetting some, all planted adjacent to or within drip line. Oh. Witch hazel, itea, ..... I’m also glad to have some acreage without walnuts. But I treasure the one that takes center stage on our front yard. There is more organic matter/humus under that tree than anywhere on my property. PS I’m ruthless in my quest to secure the walnuts before the squirrels. We have loads of hickories, oaks, and others. But they bury them in my jugLomé (what is with this Hojzz spell check.??.) ok thr squirrels bury them and by the time you see the leaves peeking out, there’s an impressive lateral taproot that seems to never end. I dug one from a sprout on the edge of my yard this summer. It was 12’ Long and up to an inch in diameter. With branching. It is tragically hard to kill those little fu... guys. Another sprouted right in the center of a 20 yo American filbert. How does one surgically remove THAT? I can’t just pull it like any other weed, it would scoff it ripping it’s top off a dozen times over 2 Years. Cutting it 12” below soil? Nooo prob. I believe they would keep up this zombie walnut program until my death — ostensibly a few decades yet -- at which time it would have an extensive underground root system, and could grow a 60’ tall tree within two seasons of me being buried. Impressive really....See MorePlanting lavender under black walnut trees
Comments (7)It is not just the shade of BW tree, There is more. BW tree releases a chemical, which I think is called Joglanole. This chemical exists in all part of the tree from root, to bark, and leave. Additionally, the root line might be even bigger than its canapy. I have read an illinois univrsity study about this, which has listed plants that are compatible and others that cannot thrive. Over the years, BW would contaminate the soil to the extent that you cannot change it. And there is no chemical to nullify that joglanole. Last year I planted tomato in a soils brough from another location. Tomato plants weredoing fine. But when thir roots reached the existing soil, they wilted and died' But there are a lot of things that are gowing just fine under BW tree, Automn olive, hawthorn, creeping myrtle (vinca?), something from hosta family, honeysucle,..But maple, pine, BW own seeding will not survive....See MoreShrubs near Black Walnuts?
Comments (5)Though I have heard about problems planting around Black Walnuts, I have not researched much and have instead just planted. I have some spirea - magic carpet and also neon flash inside the drip line in a location where they are able to get some sun. Also directly under it I have some varigated weigela. To the outside edge I have blue star juniper and a line of mums, a Knock Out rose, and a canna bed. Everything has done well. The cannas have been exceptional there. I was pleased because this was a very unsightly area when I purchased the home. I am very religious, though, of having raked up every single walnut or debris that the tree puts out. I figured there was probably a lot of undesireable stuff in these. So far, I have not had a problem. I planted this last year and today it still looks good. No guarantee on what you'll experience, but so far, so good for me!...See MoreQuestions re: planting under black walnut...
Comments (9)Hi Karen, Haven't been around much so just saw your post. I have 12 blackwalnut trees and plant right up next to them with no problems at all. I attempt to avoid the roots some, but they are easy to plant in and around. Probably the biggest thing is root competiton for water, but even then my plants have done well, even in times when I haven't been so faithful with watering. The roots are not terribly bulky , but somewhat shallow so even planting out away from the tree you will run into a root or two and may have to adjust your planting by moving your plant over slightly. But not usally a big deal.( Nothing like Maple tree roots) I ammend my soil right to the base of the tree I find most of the plants that thrive in the shade or woodland garden do well under the BWT. The one thing that I would like to grow but won't thrive is azaela/Rhododedrons. I have had good success with hostas, huecheras,Tiarellas,bleedinghearts,lilies,daylilies,Astilbes,ferns, lady's mantle and many more. Most annuals and bulbs do well also.The plants love the dappled shade the high canopy of the BTW provides. Japenese maples do great.Never attempted bamboo so I can't comment on that. Here is a link to one resource regarding juglone toxicity and compatable plants. Hope this helps Here is a link that might be useful: Black walnut trees/juglone toxicity...See Moreademink
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