Posted: 22/07/2013 at 23:16
Roses are very hardy, I agree with John I use phostrogen or tomato feed for mine and they do well.
Did you notice that the rose was grafted, you can usually tell this by seeing a green wax or similar, what is done is that a rose is grafted onto a more vigorous rootstock (2 seperate plants basically). The reason I ask this is that the long shoots could be "suckers" they are growing from the root stock not the rose that was grafted on, these will not produce any buds. A tell tale sign is that is that if you look at the leaves on the growth are there predominantly 5 leaves or 7, if 7 then its a sucker, another sign that I have learnt is that where you mention you get the odd leaf near the bottom that drops off, this happened to a couple of mine when I first started to grow them, this was the actual rose trying to grow but the nutrients were being taken away by the sucker.
When you replanted the rose you need to ensure that it is planted deep enough to protect the grafting, you tend not to get suckers then either.
Another thing I have learnt with roses is that they prefer and grow better in the ground than in pots.