Justin Welsh, was gracious enough to explain that he had purchased extension tubes that allowed him to get closer into the flower. The tripod is because he is getting a great depth of field in a very tight area. And with that depth of field, his shutter speed was at 1/3 of a second or slower. Thus the tripod was a "must."
One other thing he stated was that he likes to use his 70-300mm lens zoomed in at 300mm doing macro at 5-7ft away from the subject. I only have a 70 - 200mm but that is going to be my next project, to see how that works for me.
I am pleased to report, wildflowers are still very prevalent in Austin. They started popping out in the beginning of March and, while they are quite a bit taller now, they are still colorful and exciting. This is with my iphone but tonight I'm going back to this field with my trusty tripod, extension tubes and what I've learned from another generous photographer and see what I get.
Happy shooting, friends!