They look wonderful, Phyllis. My favorite amendment for adding lots of good stuff to the soil is alfalfa pellets. You can buy it in 50lb. bags at any feed store - it is horse food. Be sure to get the pure alfalfa with no additives. If it is bought in smaller amounts as rabbit food they add oil and vitamins to it, which wouldn't help it break down in your soil.
We grow two gardens per year at our school garden, which is very high usage. We amend each bed at the beginning of the semester with about 1/2 bag of alfalfa pellets. But you could add it as you plant as well, about a cup or two for each planting hole is what I use at home It seems to refresh the soil really well, adding lots of organic material and boosting the micro-organisms too. Our stuff grows wonderfully.
Compost is always wonderful, and we have used worm castings too since we got some donated to the school last year. The castings helped a new bed get going really well, but didn't have enough long lasting nutritive value for our tomato plants so I did have to use some fertilizer as well.
