Posted: 15/03/2017 at 07:36
Sorry Craigh...waiting for others to say something
in the ground your delphiniums, if they are of decent size, wont need a lot of feeding.
Too much feeding produces lush foliage so another sprinkling in 4 or 5 weeks sounds fine......prefer fish blood and bone though. However, more in agreement with Hogweed about mulching too......keep stems free and be vigilant for slugs
they could have flower buds in 6 weeks Craigh. If you deadhead asap it is possible to have 3 lots of flowers. I had this last year but two lots is the norm
(I grow on delphiniums until they fill 1 litre or better still, 2 litre pots and then plant out)