A groundcover plant is exactly what it sounds like- a plant that grows low, and spreads out over a large area. Most people have grass as their groundcover in their yards- because it just automatically grows and is easy to manage. However, there are so many more options out there! Check out this post by Joy at Bless My Weeds for what to plant with your grass:
-Thyme- has a beautiful scent and purple flowers
-Golden Moneywort- This groundcover grows really well in most climates and spreads rather quickly. It also is a classy gold color.
-Lamium- extremely easy to grow, grows pink and white flowers
-Sweet Woodruff- low maintenance and non-invasive.
For lots of veggies and plants, you have to either get them as seedlings, or start them indoors. However, there are some that you can plant directly in the ground as seeds. This is called “direct sowing,” and saves you a lot of time and effort. For a list of plants that you can direct sow, check out this post by 
Some plants are beautiful to look at, but poisonous to people and animals. Others are highly invasive, or attract bugs that will damage your lawn. Make sure you do your research before bringing new plants into your yard! Read