Repotting Technique – Bonsai Tonight

As I’m going into repotting season, I take into consideration how my crops grew the earlier 12 months and whether or not I need to change the soil combine I exploit for the upcoming rising season.

Final 12 months, summer season was gentle which meant that lots of my timber didn’t dry out between waterings. Among the many pines, a number of timber wanted watering day by day, however much more wanted watering each two to a few days, and a few went a few week between waterings. I additionally noticed extra indicators of root pathogens within the backyard like pythium, an organism that thrives in gentle situations.

Though I don’t know what the climate will likely be this 12 months, I need to hedge towards one other cool summer season through the use of a mixture that retains much less moisture. I may need to water lots if summer season temps rise too excessive, nevertheless it’s simpler to maintain timber wholesome by watering extra incessantly than by ready for timber to dry out.

For conifers, I plan to restrict akadama to 25-30% of the combo. For deciduous and broadleaf evergreen species, I don’t plan to make use of greater than 50% akadama. I’ll even be utilizing a a lot bigger combine. The drainage layer will likely be coarse, and the higher layers will likely be barely smaller.

Shohin pine mix

Shohin pine combine (element)

I’ve made related changes prior to now not simply to accommodate altering climate patterns, however to encourage slower progress (through the use of wetter mixes) or quicker progress (through the use of drier mixes) relying on my targets for the tree.

After all, many of the repotting season has handed the place I dwell and I’m solely simply getting began. Though it’s doable to repot bonsai any day of the 12 months, it’s not doable to do the identical quantity of root work and count on related outcomes. I’ll maintain off on a number of repots or postpone them till spring (I’ll be repotting younger chojubai then), for essentially the most half, I’m repotting as standard and attempting to work by all the pieces as shortly as doable!

Kifu and shohin size black pines

Kifu and shohin measurement black pines

In case your repotting season nonetheless lies forward of you, listed here are some repotting-related hyperlinks to assist.

Information & Updates

  • We’ve been getting some nice submissions for this 12 months’s Pacific Bonsai Expo! For those who’re enthusiastic about submitting, study extra concerning the Name for Entries.
  • There’s a novel alternative to choose up some historic Northern California bonsai. Michael Uchida of Grove Approach Bonsai Nursery is on the lookout for an excellent house for a California juniper styled by Masahiko Kimura, a Western juniper styled by Shinji Suzuki, and a Monterey Pine began at Manzanar by Juzaburo Furuzawa. For extra info, contact Michael at groveway.bonsai (at) (critical inquiries solely).
California juniper

California juniper – 36″

Western juniper

Western juniper – 35″

Monterey Pine

Monterey Pine – 49″

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