I have 1.5-years-old seeds of Morus Alba and Morus Nigra which I received from Turkey; Morus Alba seeds are 1.5x-2x bigger than whatever I’ve seed from brand companies, about 3mm, and Morus Nigra are 4mm. All this time I kept it in my home-office, at 22.5C - 24C
So I decided just to try without waiting, 10 seeds each, on the cactus soil from local store.
Here is photo of Morus Alba after 10 days, without pre-soaking and without any stratification applied; and no any sterilization(!)
Two seeds on left-bottom just sprouted:
I put seeds in polystyrene cup (with holes at bottom) on top of cactus soil and put cup in a water for about 16 hours till I saw moisture (even water) on top, then I put cup in a plastic zip-bag and fully zipped it and left on windowsill in a shade; this is the cheapest ever solution.
As a new member, I can upload single photo only… Morus Nigra seeds are from the same supplier, in the same order batch, just in different zip-bag. In the same sowing batch. Same temp, same moisture, same soil same unsterilized, etc. But they became covered with mold/fungi in few days; I think maybe not washed well enough by supplier? I opened bag, left it to dry out, and within about a week I was spraying surface with hydrogene peroxide maybe 10 times already, put it in zip-bag, than saw again mold, sprayed it, put in a bag, etc.
Right now I put Morus Nigra seeds again in zip-bag, but soil moisture is maybe 3x less now, after all this drastic abuse with 3% Hydrogene Peroxide seeds seem alive and not-empty, “fat”.
From my experience with cactuses growing from seeds, I was ignoring totally any white-cotton-like looking fungi and mold and putting it under 37C heat under artificial UV light during day, and 19C at night, and all were healthy overgrowing mold, and I never ever tried any stratification. Let’s see… will update later.
- Morus Alba seeds are big, now I understand why some nurseries call it “Morus Nigra ‘Alba’”, https://www.lecooke.com/Images/Shades/Mulberry/White-Persian-Fruiting-Mulberry(RGB).pdf, I have grafted white mulberry from Turkey (grafted!) which leaves are huge and shiny like in this PDF picture
- Seeds from same supplier (with same fungi and mold spores), “white” doesn’t have any mold/fungi growth, and ‘black’ does have
Next time I’ll try to sterilize… but, for example, I kept Morus Nigra cuttings in 99% alcohol for an hour but it didn’t kill fungi/mold; now I understand it needs less moisture for rooting (I was using 99% humidity in past, and lost it all)