Raised Bed warning
Last summer my DH built several raised beds for me and in the fall I sent in a soil sample to be tested since some plants were struggling. Woohoo! I found out we had way too much phosphorus in the soil. We combined topsoil from a local supplier with leafy compost, manure and mushroom compost, it's hard to say what is the culprit, my warning would be to have the topsoil tested prior to adding ammendments, that way you would know for sure which ammendments to use and how much to add, live and learn. Nothing we can do now except cease all fertilizing and wait for the excess phosphorous to leach out of soil (could take three years!) I highly recommend soil testing for new beds, it's worth the cost in the lives of plants you'll save.