Japanese Black Pine from seed after 21 years

[Grant Bowie]

So you re-potted in early march? Is that when you repot all of your JBPs? Would you suggest it is too late to do so now?


From what I understood and have read JBPs should be repotted late winter early spring?

Id be interested in your thoughts

In Canberra it is now too late but probably still OK in Adelaide. Your winters are not so cold so there may be no benefit to repotting now.

Since I repotted the pine we have had warm and consistent temps the last 6 weeks; whereas in late winter/early spring we would still have extremely cold weather with frosts etc. Roots don't grow well in these conditions but will in autumn.

I now repot all my Conifers (except Lebanese and Atlantic cedars) in March/April; even Australian conifers like podocarpus and callitris.

I have not lost one; and now a number of other experienced growers in Canberra and even one in Sydney are repotting in Autumn. It also spreads your repotting time over a longer window.

Grant

[Scott Roxburgh]

Will you still complete old needle pulling and bud thinning/selection in Autumn or wait?

[Grant Bowie]

Will you still complete old needle pulling and bud thinning/selection in Autumn or wait?

Hi Scott,

I will do my recently repotted tree towards the end of May or more likely in June.

June would give it about 3 months or more of settling in.

I would not do it now just in case it shakes the tree up; even though it is thoroughly wired in.

Grant