[KarenO]

I am experimenting this year with slow release granules.
I used about 1/4 tsp per plant of miracle grow shake and feed for tomatoes fruit and vegetables. (9-4-12) with calcium and other micronutrients: magnesium, iron ,copper, sulphur,zinc, iron and manganese.So far they are looking very good. How they will be in the long run remains to be seen.
The one time app at planting was convenient and so far no evidence of either deficiency or leaf tip burn or sign of excess.
Had it leftover from a year or two ago when I used it in hanging baskets. I do notice the pros use granular osmicote or other long acting slow release granules in potted plants and baskets. Thought I would give it a try.
I will use it again when I pot them up from the cell packs to quart pots.
KarenO