I accidentally received 3 Krymsk fruit root stock form a nursery They told me to keep them. I have planted them in pots. Are they good for anything other than rootstock? Will they look pretty? Will they bear fruit? I have 3 others with our favorite plum grafted onto them, but want to know if it is worth planting these others.

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You didn’t specify what type of tree they are. There are lots of species with some variety called ‘krymsk’ - meaning Crimean. I doubt they’re rootstocks. What nursery did they come from? I’d guess offhand they might be quinces. If so, someone on the forum was saying how good they are fresh, which is really unusual for quince. Usually they’re for processing. A very under rated fruit in any case.

Welcome to the forum

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I guess there is a dwarf Prunus rootstock by that name too. Didn’t know. You could plant them and graft them yourself in years to come, or give them to someone for the same purpose

Would help to know if you have Krymsk 1, 5, 6, or 7

Krymsk 1 is a plum rootstock
5 , 6, and 7 are cherry rootstocks

Krymsk 5 has never set a fruit for me, I dont know if it can,

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What they are will help- as said rootstocks with the Krymsk designation vary by number and quince names vary as well. I assume that you are not a grafter, those of us who are would use these. I don’t know where you are, but you could always trade them for something you’d use.

Apricot on Krymsk.

My Krymsk is from Raintree nursery in Washington state. They only use it for grafting for dwarf trees. For me, they grafted my plum tree onto this root stock. They mistakenly sent me 3 more Krymsk rootstocks (probably also dwarf for plum/prune) and told me to keep them. They don’t know any other use than what they use it for. I am in Oregon, 1 hour south of Portland. Anyone want them? They are already 1 foot tall with leaves. I thought about just planting them for green trees, but I do not need them.

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I looked on the website where I got the Krymsk rootstock. It is Krymsk 1 Plum rootstock and it says "Prunus tomentosa x Prunus cerasifera

Also known as VVA 1. Plums and apricots grown on this Russian dwarfing rootstock have proven precocious. Spotty compatibility with peaches/nectarines. An excellent choice for home orchardists, the rootstock produces a tree about half the size of standard and it has shown excellent results when grown in heavy soils, acid or alkaline. Very little suckering observed."
I think it’s too big to ship anywhere. It has gotten away from me–now about 2 feet tall. I guess we’ll just plant them & see if we get some edible fruit. We are not gardeners and will never graft. We paid to have a nursery graft for us.

@BarbaraH the US patent for krymsk 1 seems to be PP 15,995. I looked this up on Justia (you can just search PP 15,995 patent) and confirmed that it is a Prunus tomentosa x Prunus cerasifera hybrid. Based on the patent, the krymsk 1 plant more closely resembles the Prunus tomentosa (which was the female parent) but has longer leaves and larger dark fruit with low fruit bearing. From what I have found, Prunus tomentosa is also known as nanking cherry and produces small fruits that resemble tart cherries. Prunus cerasifera is sometimes called cherry plum and produces small plums. Given the above, I suspect that krymsk 1 would produce small fruits (likely larger than the nanking cherry but it is unclear if it would be larger than cherry plums) and most likely will not produce a very large crop given that the patent indicated low bearing. The patent also indicates that the fruit is highly acidic and not recommended for consumption. As the patent indicated that it does produce some fruit, it should be able to flower but the flowering will likely not be on the same level as an ornamental variety and it might take a few years before it flowers. I did not see in the patent if it is self-fertile so it might need a Prunus cerasifera or Prunus tomentosa for pollination to produce fruit.

If you do allow the plants to grow, please provide updates on how it turns out.

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Over the years I have had 3 nectarines and 2 pluots grafted onto K-1.
They’ve all died within a few years. Don’t waste your time.