You're correct on the image tags. I didn't notice any, but just assumed you hadn't gotten to them yet.
In terms of improving the picture display, to my eye, everything seems to have a rather muted color flow. Pastels, light earth tones, and the pictures themselves have that Portland overcast look. If you're set on the page body colors, maybe make some color vibrancy tweaks on the images to brighten them up a bit.
Looks like we'll soon be making a trip to Portland for my girlfriend's interview.
a guy who knows the lawn industry, branding, and web strategy