Do we make the blessing Shehecheyanu on vegetables? Is it permissible to make the blessing on fruits or vegetables that were grown in MY garden or on OUR Shitufi farms even if we have already eaten store bought varieties this year?

One may say Shehecheyanu when eating a vegetable the first time of the season if it ripens only at a certain time of year, the first time it is eaten that season. . Many vegetables are multi seasonal. If the vegetable is taken from storage, no shehecheyanu is said. If you have eaten from another source you would not say a bracha just because it comes from your own garden.