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Hi all, new here. I planted 3 Sophora Japonica seeds in this, and at first they failed to germinate, but after manually scarring the shell instead of the soak method, they took off. 1 died but the other 2 have been growing very quickly and I'm wondering if I should repot already.



They sprouted on Thursday, this is today's photo

Hmm, I do not have any experience about this species.? But I tend to repot my seadlings after a year. 5 days sounds very little for any tree.
?

I'm mostly worried about their roots becoming tangled and competing for resources

Have you ever seen a mature bonsai forest? If what you are talking about would be an issue, it would not be possible to create them.

Just provide enough nutrients. Tangling roots is part of the hobby, the root styling part of it. But obviously they need to grow roots before you can start to work on them. Theese tiny seedlings have nothing to work on.

Just relax, buy yourself a good beginners book and start studying. If you really must start working on anything bonsaish right now. Buy youself a mature tree that is ready for it.

Maybe I'm going about this wrong, but I hadn't thought about a forest, I was thinking individual trees in their own pots, but had sown 3 seeds in a pot to germinate them.

A forest actually sounds like it would be a nice way to go about it, so maybe I will wait a year before repotting, and keep them together for their entire life.

They will grow very slowly in pots. If you put them in the ground outside they will grow thicker a lot faster.

I don't think I will be putting these in the ground. I'm ok with slow growth, but the weather here gets extremely hot so I will be keeping them indoors during the 115+ degree summers.

I mentioned bonsai forest not as a suggestion for you, just as an example on the fact that root tangling is not a problem and something we deal with all the time. It was just to be more pedagogic. In fact roots tangles just as much on a single tree in a shallow pot.

indoors is always bad for tree health. Some species we put indoors in winter because we are forced to do it. Never, ever keep a tree indoors in summer. They need the summer sun for long term health. Especially not trees from humid summers in dry air contitioned air. This is not only bad for long term health, it is lethal.

This species is hardy to in zone 5-9. So keep your tree outdoors at all times. In the warmest days, put it in shade. If it cannot take your summer temperatures, get another species that do.

CyberKnup wrote:

I don't think I will be putting these in the ground. I'm ok with slow growth, but the weather here gets extremely hot so I will be keeping them indoors during the 115+ degree summers.

Bear in mind that trees don't listen to the weather report and they aren't targeted by air conditioner salesmen so heat matters a lot less to them than it does to us.?
For any tree, or any plant, before you get it look up the climate where it originated and see how closely that matches your climate. If it is way different then the plant won't do well. In Alabama several people have tried to bonsai larches. They die. They expect a long winter, months below freezing. We barely get hours below freezing.?
The most you have to worry about is shade for the extreme days. Just be sure to water the tree every day, and maybe twice.