I bought some achillea last year on the basis it likes light, well draining soil, which is definitely what I have. I thought it would thrive, but its really struggled. Whether it is slugs ravishing it when it is growing but it just seems a bit of a nothing plant, unlike the plant i bought last year.
My soil is light sandy soil, in full sun / partial shade, south facing. Can you think of any reason's it hasn't thrived...
I put a manure mulch on in the spring to feed everything. Should I do a seaweed feed to give everything a boost.
Any ideas gratefully received. Thank you.