Hi, I have a feeling my soil is void of nutrients. Its a new house and the landscapers must not have given us good soil. My hydrangeas, clamatis and styrax japonica tree are not flowering this year. I think I need to overhaul the soil. I assume I need a manure + compost mix. 1) When is the best time to add manure? And on that note, 2) does anyone know where I can get a good source of manure in Vancouver? I know that Lawnboy on Cambie street has compost so I'll get it from there. Thanks for your help.