I planted a Lakemont seedless grapevine and wanted to know if I should be providing any feeding or soil conditioner, similar to how I provide soil acifier to blueberries. Also, do blackberries require or need feeding?
I give my tomato plants sodium phosphate. Is it ok to provide this feeding to my other vegetable plants like cukes, radishes, lettuce and carrots? Are there other fruit bearing or flowers that can benefit from sodium phosphate?