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Hi all

Last summer 2022 I planted Jerusalem pine seeds from a starter kit.

I began growing them outside in a greenhouse, i live in the south east of England.

3 pines have grown from the seeds, which left me confused as the kit had no information about this, but I'm sure they need to be repotted individually.

As it grew into frosty seasons I moved them indoors and water occasionally.

I am thinking of moving them back outdoors as we get into warmer seasons.

I am a beginner and really have no idea what I am doing and I am relatively impressed they got this far :lol:

I want to repot them but I am worried as they are quite fragile and do not want to kill them. Does anyone have some advice on when I should repot them or what are the ideal conditions to grow them.

I read that these are complex bonsais to maintain but I will cross that bridge when it comes.

Thanks!

I too are impressed they are still alive after a winter indoors. This is a temperate species that should be grown outdoors at all times.

Even more supricing is that the still look quite healthy. Maybe the late sowing is the key here?

Now we are very close to the perfect repotting time. However for a pine seadling that haven't experienced winter I would not dare to repot. So I would wait until risk of frost is over. Bring it outdoors starting in full shade and slowly over a period of 4-6 weeks move to full sun. Then grow it there until spring 2024 when I would separate them including making basic root work. The latter is very scary for beginners, so experienced supervision may be prefered.

you should be near a club, or even a nursery where you could get some practical help. These seedlings (not bonsai) are indeed delicate, I would get them back into the greenhouse, once the weather is a bit warmer, at least by the end of this month i. Get rid of the stones on the top of the soil! I also suggest that you get a book and read about bonsai and how to get started. I would not attempt to separate them this year they need to be a lot bigger.

Great success, well done.

What is the weather where you are?
Once the worst frost risk is over, which I think might be this month for you, then step by step:

• find a coarse granule (2-6mm) substrate to plant them in. Fully organic is likely to be a challenge in wet climates, I prefer inorganic; Do read up on substrate and decide what you prefer.
• Get 3 pots for planting. a p9 is more than enough ( )
• half-fill the pot with this substrate.
• Remove the decorative stones you have there off the pot, and put the pot on its side.
• With an old knife or chopstick tease the plants from the container. To not pull the plants themselves.
• Gently break the three plants apart, probably, the roots have not mingled too much
• Remove soils from the roots, without breaking the roots. It is fine if the roots are not fully clean, but probably most will fall off with ease
• Lean the individual plants in the half-filled pots, and backfill with substrate
• Use a chopstick to "wiggle substrate between the roots. The intent it to get substrate everywhere without airpockes"
• Water well, twice over half an hour where you want water gushing out at the bottom
• Place in a protected sunny spot (4-6 hours of sun minimum

Pleanty of repotting videos around. Note that pines are more sensitive to rootpruning than broadleaves, so do not prune the roots (too much?) this time around.