Root Pruning, soil & my JMs

CEFreeman(DC/MD Burbs 7B)January 3, 2014

Hi all!

Just wanted to report on some of the JMs I repotted last fall (a year ago) and their progress.

The ones I root pruned and put into one of the recommended soil mixes here, doubled in size. Boom! Big.

The 3 I repotted & pruned in the spring were (a bad idea) hit or miss. My Dissectum Nigrum didn't care, but I lost a Kashima and Hogyoku took a morte. Died. So sad. My Kashima was 7 years old and it just didn't stand for it.

So.... although I didn't get to repot some this fall, I have 7 that MUST be repotted or just plain put in the ground.

I credit this great growth to the soil mix and getting air. My Crispa, a Koto no ito and Red Pygmy (a red Koto no ito) just thrived. Corillium wasn't sure, but did well. There are more, but I'm convinced.

Fall root pruning and a great, oxygen available soil.
Thank you for all your great recommendations.

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houzi(8)

Glad to hear of your success.We all have to experiment and in the case of JMs usually with some fatalities along the way.Many people simply can't root prune in autumn as they know in a few short weeks temps. will quickly and dramatically drop to well below freezing.I have a choice temp-wise but do it in autumn because spring is so windy and wet here.Young JMs don't always survive this without my interference so I'm not gonna stress them more.Obviously spring repotting is going to delay their take off anyway but they should catch up eventually,but if they've had a hard time in winter it could tip them over the edge.
On a similar theme I've had to experiment with the best time to do the main pruning of the trees.For me pruning during dormancy is a bad idea.My climate is only briefly cold enough to halt bacterial growth and pruning cuts at this time are often infected and spread unhindered through the plant.I've even had a couple of untouched 6footers knocked out by this,so again I'm not gonna risk it anymore.
We all live and learn and it's certainly disheartening when you lose a nice plant....but it's always an excuse to get something to replace it :)
Wishing you&everyone a continued success this year....spring's not far away YAY!

    Bookmark   January 18, 2014 at 7:58AM
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