Hello! New here, and fairly new to gardening as well. I bought this Corokia cotoneaster a few weeks ago and it seems to be thriving. I have two main questions: Firstly, I've been watering it from the bottom, because I've read that is good to encourage root-growth and it seems to be working. But, I've later also been advised that I should water it only from the top, so as you can see I've got conflicting advice here. I don't want to turn it into a bonsai, I love the look of it right now and want to keep it simply as a potted plant. Which brings me conveniently to my next question; I'd like to repot it into a little larger clay pot, both to give it room to grow and for aestethics. Should I throw away the plastic pot it came in, put some rubble for drainage and new soil into the new pot and stick it right in? Any advice from someone experienced with this plant would be greatly appreciated!
This is when I first got it-
These are the roots growing-
And this is my cotoneaster as of today-