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I have done nothing to determine what is best for them. I've kept both outside all year long, but I'm in a slightly warmer climate. With the pots simply set on the ground, they got through nights with temperatures of -10C (15F). I'm not sure if podocarpi have bud chilling requirements, let...

Let met just add that netria fruiting bodies present in Aug/Sep in this area. Further, nectria is very easily and most commonly spread by cutting tools. Whatever tools @sketchylemons used to make this trunk chop would have easily infected anything he used them on unless thoroughly sanitized...

No, I don't think so. The orange patch on the big cut looks just like orange lichen that is common in these parts. I presume it is also responsible for the coloration of the bark as well. Generally, lichens are harmless, but I see orange lichen most often on dead forest trees. So, were the...

The logic being displayed is puzzling to me. There are two groups of people on this site logged in members visitors that are not logged in Presumably logged in members are continuing to click on ads and thereby finance this site. Non-members used to come here and click on ads. Now they...

Ethylene. I've noted in another thread or two that ethylene enhances radial growth of stems. Blocking the flow of auxin causes natural ethylene production. This is why there is a flare in the stem at the top of a girdle or above a tourniquet. Likewise, this is why stems rapidly thicken once our...

Just a bit of pedantry to start: Bark grows from a separate bark or cork cambium that is created every year along with new phloem. As such a new layer of cork cells are created annually just like a new layer of wood (xylem) is --> there are growth rings in the bark analogous to growth rings in...

Those "pointy/pointed" buds are also a characteristic of Douglas fir (a definitive one in "my book").

The basic problem here is that the cambium died along this line because the chop and removal of the branch that would have been poking one in the eye (in this view). Consequently, there was insufficient auxin flow along this line to keep the cambium alive. With maples, this death typically this...

acer shirasawanum that I've grown from seed Lubos Skoda pot

Ahhh, its good to be home. :cool:

You can get bare-root seedlings for $9 each from Arbor Day. Get a bunch of them so that you can eliminate the fear factor and hence get on with quickly building up you bonsai "toolbox" (when to, how to, what to do to make and enjoy)...

"Over watering" is a common problem after repotting - try not watering it so frequently. As far as fungus is concerned, you can spray a solution of 2 teaspoons 3% hydrogen peroxide (from the grocery/pharmacy) in a quart of water every few days, instead of cutting off leaves. This solution is an...

There is a thing called Polar Auxin Transport (PAT) in the cambium that defines 'up' versus 'down'. It is due to 'PIN proteins' in the cell wall being on one end of the cell. An 'upward' graft (as you show on the left in your diagram) the PAT flow is continuously down on the underside of the...

Indeed, it does depend, but considering a few fundamentals will remove a lot of the mystery. Root growth is stimulated by auxin which is produced by leaves and buds (above). Auxin is consumed (above) when new growth is extending Transpiration is a fundamental process of tree life. Water and...

Logically it seems like a possibility. It works above ground because of the interruption of the normal direction of the PAT stream which causes ethylene production that affects the enhanced radial growth. The PAT continues all the way to the root tips and so, similarly wiring a root ought to...

Good nitrogen nutrition is of key importance for budding.

My observations are that the rate of stem thickening (vascular growth) increases in spring to a maximum shortly after the occurrence of the summer solstice, https://www.bonsainut.com/threads/cork-oak-repot-experiment.10594/post-166869...

I agree with @Cruiser;s diagnosis. I have experience with it in Japanese maples and have only cured the infection (and saved the tree) by cauterizing the area of and around the fruiting bodies. By 'cauterizing' I mean hitting it with a butane torch (in the same fashion as one can see Maro...

It was done in by a sharp freeze in the early spring of '22. An interesting coincidence is that the landscape nursery where I bought it had a mature (15 feet or so tall) ground planted specimen that died that same spring. I concluded that azaras are not at all cold hardy (i.e., marginal USDA...

I didn't think to taste 'em 🤡

Witch's Hat (DHygrocybe conica) a first sighting for me.

Sugar lovers