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16 votes
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Why doesn't the UK produce hazelnuts, chestnuts and walnuts, despite having suitable climatic and horticultural conditions?

We do grow hazelnuts, in large quantity actually, though not so many as we once did, mostly down in Kent, where its called the Kentish cob and/or filbert (there are differences between the two). They ...
Bamboo's user avatar
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6 votes
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Do walnut trees grow in rain forests?

Minimum temperature changes among walnut (Juglans regia) varieties (where I live, the walnuts withstand -30 to -40°C / or -22 to -40°F). The maximum temperature is generally around 35°C (95°F) and ...
Alina's user avatar
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4 votes

Will using landscaping stones and dirt around an English walnut tree kill it?

Yes it is. If your tree has buttress roots that stick out above the soil, these should not be covered in any way, and the soil level around the trunk should not be raised even if buttress roots are ...
Bamboo's user avatar
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4 votes
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Diseased walnut?

As you've noted, you have a shagbark hickory (Carya ovata) tree, not a walnut. The nuts are difficult to crack but delicious. This is good news because the tree is not allelopathic, which means that ...
Jurp's user avatar
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4 votes

Can I plant English Walnuts on earth berms above poorly draining clay soil?

In my hilly area there's clay or heavy clay soil and English walnuts (Juglans regia) grow well. People who've got large orchards amend their soil, but people with one or two trees in their backyard ...
Alina's user avatar
  • 5,446
4 votes

Walnut leaves in compost - yes or no?

Yes, you can - if your trees are black walnut, the leaves will have a higher content of juglone, but it will break down as it composts over time and won't be an issue. The juglone disappears quicker ...
Bamboo's user avatar
  • 134k
4 votes

White growth on young walnut tree - is it an illness?

Sclerotinia sclerotinorum, White Mold Without being able to see much detail, this particular fungus, White Mold may be what you have. It is rare for this fungus to bother mature trees but since your ...
stormy's user avatar
  • 40.5k
4 votes

Is it harmful for birds to have a house hanging on a walnut tree?

It's likely to be painful if a walnut falls on you, and if you're asleep, you won't be able to avoid them. So, a reasonable suggestion to not sleep under a walnut tree. As for a bird house as long ...
Graham Chiu's user avatar
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3 votes
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Which vegetables under a walnut

Potatoes aren't great near a walnut tree, but the others you mention should be fine, if they get sufficient sun. Vegetable plants sensitive to juglone include the nightshade family, so potatoes, ...
Bamboo's user avatar
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3 votes
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White growth on young walnut tree - is it an illness?

It is a fungus, but it's not harmless - unfortunately, this will have been at work inside your tree for quite a while, digesting the wood. What you see on the outside as these white deposits are the ...
Bamboo's user avatar
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3 votes
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Some of my walnut trees have double trunks. Is it safe and wise to remove one?

It depends, for what reason do you want to remove them? If it's for aesthetic reasons - to give them a "classic tree" shape with a clear stem - then that is just up to you. Just proceed carefully and ...
Max Spencer's user avatar
3 votes
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How to manage fruit-trees blooming for the second time in autumn?

Copper sulphate could be applied in autumn, in spring (better) or in both periods (e.g. on zones prone of fungal diseases). Now with flowers, it is difficult to apply it where the diseases is hiding ...
Giacomo Catenazzi's user avatar
3 votes
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Is it harmful for birds to have a house hanging on a walnut tree?

Allowing your birds to live hanging from a walnut tree is actually an excellent idea. Walnuts are among the many favorite nuts of backyard birds. Some others include peanuts, acorns, pecans, almonds, ...
Sue Saddest Farewell TGO GL's user avatar
2 votes

Recommendations for climbers that'll climb by a walnut tree

Note that black walnut (Juglans nigra) has the highest level of juglone in all its parts, so that is a significant difference between it and Juglans regia, the common walnut. This link https://...
Bamboo's user avatar
  • 134k
2 votes
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What can I do with this broken leader on a black walnut?

Here's what I ended up doing: Materials: steel pipe outdoor grade duct tape 50lb UV resistant nylon zip ties strips of rag The hard part was pulling the stem back up, as it not only weighed over ...
J. Musser's user avatar
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2 votes

Are walnut tree chips suitable as mulch?

It depends what you want to grow. Not all plants are sensitive to juglone. According to this from a US university, beans, corn, beets, onions, and raspberries are tolerant, for example. Plants that ...
alephzero's user avatar
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2 votes
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Disease on walnut - light green convex lumps on leaves

Most likely to be Walnut Gall Mite, see here http://homeguides.sfgate.com/walnut-gall-mites-75630.html Although unsightly, treatment is not entirely necessary because the mite damage does not kill ...
Bamboo's user avatar
  • 134k
2 votes

Can I plant English Walnuts on earth berms above poorly draining clay soil?

Jamin, I support you in your determination to welcome Juglans regia in your yard, however, I believe you would be better off, in this case, doing much less work. It is a large tree, and, eventually, ...
VividD's user avatar
  • 5,830
1 vote

Can you plant white walnuts in summer?

It depends on how do you plant it. If you buy it in a pot, and you can plant without touching much the roots, it doesn't matter so much the period you plant it. But if you get with bare roots, fall/...
Giacomo Catenazzi's user avatar
1 vote
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What do I do with a Hügelkultur bed that contains black walnut?

The logs were very broken down and nearly falling apart. Then they're subject to decomposition, leave them alone! From the science, Degradation of juglone in water is pH dependent, it is strongly ...
Evan Carroll's user avatar
1 vote

What are these very small red bugs on my black walnut tree?

This is a stab in the dark...Scarlet Malachite Beetle larvae. The size wasn't specified but red larvae with black head should be rare...ish? Scarlet Malachite
stormy's user avatar
  • 40.5k
1 vote

Can I plant English Walnuts on earth berms above poorly draining clay soil?

Jamin, yes you can grow trees in berms. 94% of all plant roots get their chemistry and water from the top 6". Deeper roots are for support, not for sustenance. Your berm needs to be compacted get ...
stormy's user avatar
  • 40.5k

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