Martha Gets Down and Dirty

Martha maintains her trees and joins Kim Kardashian in planting tomatoes.

Martha hosts a spring barbecue, and Al Roker shares his famous rub recipe.

Martha and Tiffany Haddish shake things up with their planting project.

Martha beautifies with houseplants and teaches Alyson Hannigan orchid care.

Martha caters to her feathered friends and swaps tales with Nicole Richie.

Martha plants azaleas and gives Jesse Tyler Ferguson a "Martharita" lesson.

Martha gets her hands dirty as she plants roses and seeds a field full of wildflowers. Then, Ellen Pompeo learns the tips and tricks in floral arranging, and Seth Meyers shakes -- not stirs -- things up with Martha as they make flower-inspired beverages.

Martha shows Brooke Shields knife skills and breaks eggs with Paris Hilton.