Hi here.
Im looking to add 3 new trees to my garden.
My hope is that it can be 3 different mullberry treees; a white, a red and a black.
Does anyone have suggestions as to which varieties i should chose? Im in zone 6 (Northern Denmark)
I can find a few placeds in Denmark to buy them, but mostly its just named “red mulberry” or “white mulberry” instead of actual cultivars
There are many mislabeled black mulberry, but all the ones I am aware of would not survive a zone 6 winter. They also don’t seem to enjoy being in a pot at all. So maybe just the red and white would have to do, unless someone knows of some cold hardy true black mulberry, I am just unsure of one.
Its a it confusing thoug, as im lookign at the “Oscar” variety, and its a black fruit. But the latin name suggest its a white mulberry?
Im looking for differebt colors of fruit, not different genoms.
In case that makes my quest easier
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The fruit color is different from the species; going by species:
I suggest you get a good rubra hybrid like Illinois Everbearing (Morus rubra “hybrid” - red) and an alba like Galicia (which has black fruit but an alba species so white) or another alba Gelso Sangue e Latte (which has lavender colored fruit also an alba so white)
There is a famous nigra in Deutschland Mathildes Traum and it survives it zone 7
Nigras are not cold hardy so you might consider keeping a Morus nigra (black) in a pot
https://www.pflanzmich.de/search/?queryInput=morus
https://www.botanik-wug.de/c/unsere-maulbeeren?sort=position-asc&page=7
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Thank you very much for the reply. THis was very much the help i needed
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Perhaps try to make your selection based on late sprouting varieties. Some albas are prone to early sprouting and in case your spring is anything like around København, they could sprout early and be later damaged by late spring frost.
Considering your location, and the sea around you (big unknown for most people here) I would look around what people grow in your area as local varieties or individual trees are best suited to those conditions. It may save you a lot of disappointment.
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I live in southern Denmark, zone 6B. I have tried many mulberry varieties and, until so far, Collier is the best. It doesn’t grow too tall, it is completely winter hardy, doesn’t leaf out too early and it tastes very good. The berries are good sized and the yield is big.
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Have you tried morus acidosa Mulle?
No. I havent tried it. Does it work in Denmark in your experience?
I’ve read the variety was selected in Sweden, so I thought it could. I don’t know which part of the country though. I’m mostly asking because the description looks good on paper - both hardiness and flavour, but I’d rather prefer personal experience over marketing. 
I have heard the flavor of Mulle is only ok but I don’t grow it
Yep. That’s what the nurseries say. But my black alba is O.K., too. I’d like to know how it compares to nigras. Then it would be interesting.
I have several Mulle trees but I think that I will remove them and replace them with Collier trees.
Mulle tastes good but the fruits are tiny. I have tried several pure M. alba varieties but none of them have thrived here.
Wellington is also a good variety but quite vigorous.
I am not too happy about Illinois Everbearing but I think that my IE tree is growing at a place that is a little too shady.
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