Sad looking lavender
I hope someone can advise...I am new to this forum but have read lots of good advice. I have just planted a lavender border, 12 plants in total. I am fairly sure that I have normal, well drained soil. I watered the plants before planting, and gave a little water afterwards as I know they don't like to be over watered. I gave them a little water the next day, then went away for the weekend so left them alone with no more watering. When I came home, a few of them were starting to look sorry for themselves, flowers wilting and the bases turning brown. They are in differing states of sadness; some looking very pathetic, some just not so great, and 3 look perfectly healthy!
So I am guessing that the soil OK because of the thriving ones. The only difference that I can think of in any of the planting is that I did it in a bit of a rush and I mixed blood fish and bone into some of the holes, but forgot with others, but I don't know which was which now. I didn't think that should matter hugely though as I thought it was pretty hardy and shouldn't die just because of the lack of fertilizer?
I think couple of the holes possibly weren't as deep and the bottom of a couple of plants were slightly higher then the level of the ground, but only slightly. They are in the sunniest spot of a sunny garden. Incidentally, one of the really thriving ones is in a spot that gets a bit less sun than the others!
Sorry for the heavy detail, I just wanted to give all the info so I could hopefully get some opinion on what I am doing wrong!