Itoigawa Shimpaku summer work

I last wired this one 2 years ago, and the wire was digging in. It had also gotten fairly dense, and as is the case, weak areas got weaker, and strong areas got stronger.

So this work was to remove the wires, and then trim the tree back to restore some balance.

Here is the tree before the work…bushy!

After unwiring, it really has a case of bed head.

And before pruning back:

Some detail of the cleanup, here’s what gets cut.

Crotch Growth
Dead stuff
Weak juvenile growth
Long runners

Starting with this:

Ending with this, branches ending in pairs of growth “tufts”:

This will make fall wiring much simpler!

Another branch example:

In all, about 1/3 of the foliage was removed, but most of it was inefficient, shaded out and weak.

What’s left has space in the sun, and good balance for even growth for the rest of the growing season. Here are some shots after the work:

Underside of the first left branch
Underside of the first right branch
Looking up into the tree, notice there is plenty of space for air and sunlight.
Apex
Overhead shot looking down over the tree. Good distribution.

One more shot a few days later, after foliage has had a chance to settle in again:

In the fall, the tree will be wired again, with less but similar thinning out. I’m still on the hunt for a good pot…

Losing trees: Tosho

Well, it has been a while since I lost a tree. Unfortunately, this was an imported, collected needle juniper. They’re uncommon. I have owned it for 4 years, and it’s always been healthy. It was repotted last in 2018, and doing fine until this spring.

January 1, winter color, nothing unusual.

End of February, still seems ok.

End of May, clearly dead.

What happened? Unpotting it revealed some rotting roots on one side: under the thickest of the moss, and very broken down soil underneath, with some earthworms present as well:

So what’s the verdict? Could be root rot, could be the late frost we had in April, could have been ready for a repot sooner, could have been too wet. Regardless, here’s a sad parting shot.

But I’ll end the post with one of my favorite photos of the tree. Club show, May 2018. On a David Knittle table, owned by a friend. The accent is Erodium in a Byron Myrick pot.

Aggressive JBP repotting

Sometimes the roots are in bad enough shape that sharp intervention is required. This tree was growing in organic soil, and I didn’t do a good job of removing it in early repottings. This led to weak roots under the trunk, and rotting roots coming off the trunk itself (potential nebari).

The outside of the root ball shows plenty of microrrizae:

But under the trunk, I was finding lots of black, rotten roots and dense black field soil. So using big concave cutters, I started to clean up the underside of the trunk, back to only what was alive and not rotting:

It was a gamble, but I was convinced the tree would continue to decline if I didn’t get aggressive. In the end, I removed more than I would like on a Japanese Maple, let alone what I’d want to remove from a JBP.

However, I had left a lot of foliage on the top, and the timing was about perfect, buds were pushing, and the sun was warm.

It’s planted a bit high in a shallow pot, which was intentional to get better roots growing along the surface. The depth will be adjusted in the next repotting, as well as the planting position.

2 months later; late May, I am satisfied with the tree’s response:

Late June:

I will not candle-cut it this summer, but will prune and wire it in the fall, and reposition the tree in the pot in the spring of 2022.