I remember there was a time when I thought I didn't like the colour yellow. Maybe it was because of the awful lemon-yellow of painted walls, or harvest gold appliances, of my childhood and youth. I do not wear the colour yellow, but I love my softly yellow walls in my home, and the cheerful colours of so many yellow flowers. I'm still not particularly a fan of school-bus yellow flowers, but there are so many other, more subtle and gorgeous flower colours, and this seems to be my year to plant a lot of yellow. Starting, of course, with one of my favourite roses, 'Graham Thomas'.