I have some sapodilla seedling (Alano) growing in deep insert seedling plugs (~1.5" square, by 4" deep).
The seedlings are like 4-6" by my estimation.
It's about time for me to pot it up to 1g and I don't really have the space for them.
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I can fit around 4 plugs in a in a small flat box. (I'll take them out of the tray and put them in a ziptop bag.)
$10 a plug to the states that allow it.