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.

Thank you for reporting this comment. Undo
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
Sign Up to comment
More Discussions
Japanese Maples - first year care
Zone 7a - North Alabama Hello and first real post in...
Bama_Joe
Need help with struggling Jap Maple
CHeck out these pictures my Japanese maple isn't doing...
djiancharles
Japanese cultivars requiring the least sun (Zone 5)
Japanese Maple Cultivars Requiring The Least Amount...
directorrod
Acer Griseum grafting
I have found a medium sized Acer Griseum on the side...
peat23
help choosing a tree
I want to put a row of trees between my neighbor and...
bucks5022004
Sponsored Products
Alera BCR56036 Aleradius Corner Wood Veneer Bookcase - ALEBCR56036MY
$292.99 | Hayneedle
Flokati Ivory Rectangular: 9 Ft. x 12 Ft. Rug
$691.20 | Bellacor
Eternity Floral Patina Rug (7.10' x 11.2')
Overstock.com
Knife Edge Chaise Cushion - Blue, 74" x 23"
Grandin Road
Let the Children Come´┐Ż Oval:5 Ft. 4 In. x 7 Ft. 8 In. Oval Rug Kid Essentials -
$255.95 | Bellacor
'Read My Mind' Plaque
$9.49 | zulily
Wedgwood Pashmina Gravy Boat - 5C106903100
$140.00 | Hayneedle
Lounge Gun Floor Lamp by Flos Lighting
$3,625.00 | Lumens
© 2015 Houzz Inc. Houzz® The new way to design your home™