Q.Hard Soil
My garden soil is really hard . The vegetables I planted started out really well but they seem like they stop growing and plants don’t have the shine to them

Certified GKH Gardening Expert
Hard, compacted soil needs to be loosened with the addition of organic materials such as compost, peat moss, humus, aged manure, etc. Since the area is already planted, you can rake the compost in around your plants. Or, rake them under if you are starting over with the plants. Or, move your plants to containers while you amend your garden soil.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm