Martha Gets Down and Dirty

Martha makes her rounds to maintain the trees on her 150-acre property, and Kim Kardashian joins in on planting tomatoes.

Martha hosts a hot dog contest during her first spring barbecue of the spring season, and Al Roker teaches her how to make his famous rub.

Martha and Tiffany Haddish shake things up as they work on a planting project together.

Martha adds beauty to the home with the help of some houseplants and teaches Alyson Hannigan how to care for an orchid.

Martha hatches a plan to cater to her feathered friends and swaps stories with Nicole Richie.

With spring in full swing, Martha, Ryan and Kevin plant azaleas and tree peonies before giving Jesse Tyler Ferguson a lesson in "Martharitas."

Martha gives Ellen Pompeo some tips in flower arranging and shakes things up with Seth Meyers as they make flower-inspired beverages.

Martha helps Brooke Shields learn all about knife skills, instructs Paris Hilton on the perfect omelet and assists Tamron Hall in making snow cones.