I am paying serious attention to my dill atlantic pumpkin plants for the first time this season (in the past they have not gotten special attention). I have read about a water soluable 15-11-29 fertilizer, but my local feed store is not familar with these percentages in a water soluable. Could anyone tell me the manufacture(s) of this or a similar fertilizer? Thanks! Leslie Vogt Pittsfield, NH