I agree that planting in July can be a challenge. Also under a Blue Spruce can can be a contributing problem. You mentioned adding 1 foot of compost. What type of compost and was it mixed in well? I received two orders of SBD iris this summer in mid-July when temps were hovering near 100. I planted 1 order directly in the ground and potted the other and kept the pots in partial shade, The potted ones did much better and i will transfer them to the ground soon. Don't get discouraged......
