u/Sea-Station9564

I have these new fry in my pond - any ideas? <10mm

Thank you!

(Southern UK) I managed to grow this 5’ sapling from a cutting I took from a sadly old fallen tree a few years ago. I’ve potted it up every year but I’m looking for care advice please. How best to promote strong root growth, what feed should I use, should I overwinter in the greenhouse, should I cut back etc etc. I’m a total tree novice but I want this one to do well!