Yes, it won't help it fruit this year but it will thank you next year! Use ericaceous compost as they require acid soil. To do well they need to be in a pots of 50cm diameter or larger.
Try mixing one or two drops of washing-up liquid (or other very mild detergent) with water in a hand sprayer and spraying them. This breaks the surface tension of the water and effectively drowns them. On stronger plants you can use the spray attachment on a garden hose to blast them off. Encouraging wildlife such as ladybirds, hoverflies and small birds is the best thing to do in the longer term as these all eat aphids.
One possible cause is the roots drying out - they absolutely hate that.
I agree with Alan, they are lily aphids - here;'s one zoomed in:
1) Geum urbanum (wood avens) - another weed you don't want to let seed.
2) Tree seedling, probably birch.
3 & 4) Possibly one of the nightshades if not something you have sown.
Last edited: 09 June 2016 19:21:02
Ivy leaved speedwell. One of my permanent 'friends' that doesn't know when it's time to go home!
The flowers can be quite pretty but don't let it seed as they blow everywhere (which is probably how it arrived!)
They are tender perennials Aym and will often come again after a mild winter. Some are very tender though and will only last the summer in this country (they are native to south Africa.)
Last edited: 08 June 2016 21:56:21
I would also pinch off the worst affected tips and this will also act as 'summer pruning' which will encourage more fruiting spurs to develop for the future.
No, you have a genetic variation there, aka a mutant.