Chojubai, a variety of dwarf flowering quince, is one of the few bonsai I can repot in summer. Repotting chojubai in early spring also works, but by repotting now I can get a jump on the upcoming repotting season.
Chojubai can be repotted with or without defoliating first, but I prefer to defoliate as most of the old leaves fall off after repotting (see “Repotting young chojubai” for details).
July and August are good times to repot chojubai where I live as we have warm weather in summer and fall which gives the trees a chance to produce new roots before winter.
Here are some of the chojubai to be repotted. The first step is to remove the foliage.
To get a better sense of how chojubai respond to summer work, I pruned some of the trees and left others alone. Here’s one of the plants I pruned.
Chojubai before pruning
I planted the smaller chojubai in three or four inch plastic pots.
Chojubai in 3″ pots – one week after repotting
The larger chojubai went into 8″ colanders with risers made from loops of drainage screen. Using the loops of drainage screen effectively makes the colanders taller so I don’t have to cut additional roots to make the trees fit.
Chojubai in 8″ colander
As you can see in the last two photos, the chojubai leafed out within days after repotting. I hope to learn whether or not pruning at this stage makes a difference, so I’ll track these trees through fall and winter and report back if I notice any patterns.
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