Dahlia tubers look ok. Don’t give up yet… They need to be potted up , not to deep add a bit of flower fertilizer lightly water until you see the first 3” of growth. They need warmer temps to start growing. In late June thru July the tubers will show their stuff
Pac— very impressive foto’s ! It really is beautiful to see.all the blooming beauties and your style of photographing. What a pleasure.