According to the USDA Forestry Service, it depends on how old you are and what other steps you take to reduce the amount of carbon you release into the atmosphere. One example is a 20 year old will need to plant and care for 80 trees seedlings to remove and store the carbon they produce. A 50 year old will need to plant and care for 500 seedlings. As you can see, the sooner one gets started planting, the fewer trees are required. A newborn requires only 50 seedling trees to sequester all the carbon they will produce in their lifetime.
Trees grow and store carbon in small amounts each year.
When they are 10 to 20 years old, they enter the fast-growing period of their lives and store increasingly more carbon each year. Cool weather is an excellent time to transplant hardy trees and shrubs. You have an oak seedling growing in you flower bed that would look much nicer in your back yard where it has plenty of room and will provide shade. Prepare your planting site by digging the proper size hole. One no deeper than the roots removed and twice as wide as the root ball.