Here are some photos of my show flower bed when I first planted it in January 2012. You will see how much growth we get in such a short time and this is why we never stop our regimen. If we actually had a true winter (so to speak) we would not fertilize, but they just continuously grow here.
Photo right after I was done planting on Jan 20, 2012
Photo taken March 07, 2012
These next photos were taken March 28, 2012. You can see how much growth there is in just 3 weeks