I will dig up and put in a pot until big enough to plant in yard. Rate my chances, ==>>> ummmmm ... its growing nicely in mother earth.. why would you pot it.. an attempt to love it to death??? mark it with some bright string or some such ... and when the leaves fall off... dig a new hole where you want it... then dig the plant out... just one shovel full .... and move it ... 99% odds of success IMHO ... but you will be responsible for all water next year ... and a good mulch cover will help .... by potting... and mind you i learned this the hard way ... you add the following variables.. each one.. you are able to screw up: media watering winter storage black pots in winter sun leading to early dormancy winter watering etc.. etc... etc ... most trees have and need a dormancy [we arent discussing areas where trees may not have such] ... thats why the leaves fall off on deciduous trees ...... and once you pot things.. its just so easy to mess them up ... so go with what it prefers ... as a self sown seedling ... all plants are movable.. and trees are best done.. when dormant.. so there is less stress.. trying to save the leaves... and its root growing time.. when there are no leaves... especially in your temperate area .... as such.. it ought to come out of your version of winter.. ready to take off like a rocket ... finally ... its a free sown tree... it should never need food ... though its immature.. it is not a baby ... just give it proper water.. and it should be all set ... good luck ken

I think that must be it! And the name sounds familiar so I am thinking it did get planted last year and we just forgot about it, and didn't realize we could get new plants this year. I am sad to say I think I pulled some out when they were small. :-( Thank you!

It's still multiflora. But in a garden situation, it is great rose. there is 'wild' multiflora called R. multiflora carnea that is a subtle light pink. I've seen it in scatterd woodland places (natural variability in seeds from back when the USDA encouraged the planting of multilflora for stream bank stabilization, for reclaiming mined areas, for lessening the effects of cars crossing interstate medians at high speed, and as a sustainable substitute for barbed wire. Multiflora only becomes rampant and unmanageable when the landowners don't care. It will carry RRD the same as almost every other rose in our part of the world. But it carrys it ONLY if it's infected from another rose. I like the color of your foundling, and you might enjoy watching it 'grow up'.

Better late than never. Sicyos angulatus, Burr Cucumber.