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Black walnut trunk and columbines
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Posted by mogardener z5MO (My Page) on Sun, Jul 6, 08 at 13:25
| I have the shell of a very old walnut trunk in my yard as an ornament. We cut it down nearly 20 years ago but I've displayed it on a bed of wood chip mulch with mostly purple coneflower and other wild flowers planted no closer than 2-3' around it. I want to move it to a shade garden but wondered if there is any chance that it would still have enough juglans in it to affect hostas and columbines planted within a foot of it.
TIA for ideas, experience or just a wild guess.
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Follow-Up Postings:
RE: Black walnut trunk and columbines
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- Posted by hld6 z7 MD (My Page) on
Mon, Jul 7, 08 at 22:30
| On most lists Hosta is listed as juglone tolerant and columbine as jusglone susceptible. So even by a living walnut the hosta would have a good chance. (I say chance because these lists are all derived from not very well characterized observations.) As for your Walnut trunk my guess is that it won't be a problem if it's been more than a few years since it was alive. But you can test it. Tomatoes are extremely susceptible to juglone. Plant a tomatoe plant where you want to put your columbines. If they survive your columbines should. -Helen |
RE: Black walnut trunk and columbines
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| Jugalone is primarily in the leaves IIRC so you should be in the clear. Any broad leaf weeds grow near the old stump? |
RE: Black walnut trunk and columbines
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| Helen, we cut down the trunk over 15 years ago and it was rotted out prior to that. It has a very beautiful texture as part had been where a limb grew. Brendan, until I pulled them out, yes, there were broadleaf weeds growing around the trunk. Thank you both for your responses. I guess nothing to do now but plant them. I have to plant near a rock or some sort of hard surface or my wonderful old Great Pyrenees will think I'm making him another bed. As effective as he is at keeping deer and 2- and 4-legged coyotes at bay, he can sleep where he wishes. |
RE: Black walnut trunk and columbines
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| We have columbine and hostas under our living black walnuts. They do just fine. I know the columbine isn't supposed to(I planted them there before I understood about black walnuts), but they are fine, after 3 summers. |
RE: Black walnut trunk and columbines
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| Well, it's done. The columbines never missed a beat after I transplanted them--Thanks to you all. |
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