You also need to know the frost dates in your area. Those can be found HERE. Some plants can survive a frost. But things like tomatoes and squash cannot. These either need to be started indoors and transplanted or purchased from a nursery and planted outside after the fear of frost has passed.
You can use create a gardening log to help you keep all the information straight. Since my growing season is longer than any of my plants require to mature I could actually start them all from seed straight in the garden if I would like.
Having this information ahead of time lets you visually see what you can grow and what you would need to start ahead of time. It also helps you calculate how much area you will need to grow the varieties of plants and flowers you are interested in.
You want to make sure there is enough time before the fall freeze to harvest your garden. For me the items that take the longest to mature are pumpkins. As long as they were started right after the last spring frost I would be fine to start them by seed directly in the garden. They take 110 days to mature and I have on average a 154 day growing season.
I know for me I tend to be itching to grow anything green after a long winter and love to give my plants a little head start by starting them indoors about a month before I can transplant them to the garden. This allows me to have a longer growing season and I can start a second crop directly in the garden a few weeks after my freeze date to make sure I have a continual harvest all summer.
You can easily start a lot of seeds indoors. As a general rule of thumb however you want to avoid starting any root crops indoors - carrots, potatoes, peas, radishes - these are easily disturbed during transplanting.
During these crazy times of Covid-19 I like to look for a silver lining. One of my gardening groups on Facebook yesterday reported that they had over 700 new members! That is over 700 people taking a moment to think about slowing their lives down during this times of social distancing and getting a little more in touch with nature. Getting their hands in some dirt and planting some tiny seeds.
If you want to try growing something even if it is just in a small pot or bucket on your patio or in a windowsill I encourage you to try it! Two seed companies that I love also have great resources on their sites that I will link here.
I hope this helps! If you have a question drop it below!