Mosaic Monday - growing wild

I had a single plant of this in the corner of my garden one year and it stayed like that for several years. In the past couple of years, however, it has exploded and moved all over said garden. Pretty, but not what I wanted. This fence:

 ...was bare in front and boring! I started moving plant starts until I ended up with this gorgeous wall of yellow! Weirdly, since moving them they have started mutating - originally they were plain yellow petals with a brown center but now some have red, some are doubling (or tripling or quadrupling?).

They also attracted this...moth? Anyone know what it is?

 Be sure to visit Little Red House to see all the beautiful mosaics!