Hello Sonja, hello Ralf,
how deep I plant my arisaemas - the tubers depending on the size, as deep as two to four times the vertical diameter. But then it is always a matter of feeling, rare and sensitive species, which I prefer to keep in mind, I plant a little flatter, and then when they grow, they pull themselves down anyway, as many tuber-forming aronstab plants do. Sensitive species do not come into the garden, for these I take as high plastic pots as possible.
In the garden I have with a lot of luck, they sometimes tolerate this very well.
These two Arisaema candidissimum I just digged behind the early bed a few years ago, they were misdeliveries (should be something very special . . . . .), but they thanked me, and come back every year, no matter how much weeds around them. Grows.
index.php?page=Attachment&attachmentID=4626
index.php?page=Attachment&attachmentID=4627And this was also to be a very rare Arisaema, Arisaema wattii, but was only something quite normal. She has also found a corner under a camellia, the same applies to this arisaema, but I am always looking forward to it when she comes back. She has not yet found a name (???).
index.php?page=Attachment&attachmentID=4628Right, the substrate: in my garden is in the depths clay and sand, the upper layer is, depending on the location, rather loose and humic, that has developed over the years, by foliage, etc., which has been left behind.
In my English-language Arisaema book by Guy and Lilian Gusman I have also read that Arisaemas prefer "woody soil", and I try to imitate this for the pot culture, I take the ingredients as I have them at hand: flower soil, then comes Coconut soil, which is beautifully fibrous, then finer mulch of pine bark, and sometimes also seramis or similar, for ventilation.
With all my plants, I try to understand how they live in their natural location, and then put together a substrate that pleases them.
Ralf, I could show pictures of my garden, maybe there is a suitable area for something like this here in the forum?
Greetings,
Ada