Spring means it's time to get fruity, so for the preheat challenge, eight of America's best bakers undertake a shortcake makeover using any fruit but berries. To stay in the competition, the bakers will have to create berry naked cakes.

The remaining bakers take on outdoor activities with a pre-heat ballpark snack dessert made from classic ballpark treats like popcorn and soft pretzels; the bakers attempt to create barbecue imposter desserts.

In the pre-heat, the six remaining bakers must make yummy dippers and create a sweet fondue; for the main heat, bakers must produce glorious rainbow desserts to stay in the game.

The five remaining bakers are tasked with transforming farm-fresh vegetables into delectable desserts; in the main-heat, the bakers pay homage to a traditional farmhouse breakfast with bacon and egg-themed confections.

In the pre-heat, the four remaining bakers take inspiration from typical Mother's Day gifts for their stunning desserts. Then the bakers take on chocolate, the most appreciated Mother's Day gift of all.

The three remaining bakers create an array of snacks for the welcome baskets for a destination wedding; in the final main-heat, they must bake a wedding cake inspired by popular wedding destinations Mexico, Hawaii, and Italy.

The competition kicks off in the pre-heat, when the 10 bakers celebrate the bountiful fruits and bright colors of the season by making fruity, tie-dye mini cheesecakes. In the main heat, the theme -- and the competition -- intensifies when the bakers are asked to incorporate fresh herbs and produce color gradients in their naked ombre cakes.

The nine bakers create cupcake flower arrangements and amp up the flower power with flower essences; in the main heat, the competitors are challenged to make and decorate mirror-glazed gazing balls and plate them in edible gardens.

The eight bakers work in teams to create springtime mini pies perfect for an outdoor gathering; the competitors make desserts using three items from a picnic basket, but are not allowed to make the same thing as their picnic partners.

The seven bakers take on springtime eclairs in the pre-heat challenge; host Ali Khan asks the bakers to create edible spring goodie baskets filled with two types of baked treats, one of which must use a hard-boiled egg.

The six bakers have to create berry tiny desserts that pack a big punch; the main heat features an explosion of color and design as the bakers take on spring-patterned roll cakes.

The five bakers must use only agave as the sweetener in an assigned dessert: a tart, a flourless cake, an ice cream sandwich, a doughnut or a cupcake; for the main heat, the bakers make succulent cakes that rival the real thing.

In the pre-heat, the four bakers must pair avocado with chocolate, lime, orange or ginger in a dessert; in the main heat, the bakers add a spring feel to a winter dessert such as pumpkin pie, pecan pie, bread pudding or peppermint bark.

The three remaining bakers must use ugly ingredients to make the most beautiful dessert in the pre-heat; the main heat is all about hidden beauty; the bakers must prepare vibrant and colorful geode cakes using handmade rock candy to win.

Ten bakers celebrate spring by combining all things cute and delicious in their spring animal-themed doughnuts in round one; in the main heat, the bakers create watercolor cakes featuring iconic spring fruits and vegetables.

The remaining nine bakers compete to make blue-ribbon worthy rhubarb pies with decorative crusts; the competition gets wild and wacky in the main heat when the bakers have to make larger-than-life versions of favorite fairground treats.

In the spirit of spring romance, the eight bakers are paired up in teams to create harmonious mashups of two different desserts.

The seven bakers put a spring spin on Southern classics, starting with the challenge of turning a can of biscuits into a spring dessert flavored with lemonade, bourbon or sweet tea.

Easter is a time for colorful desserts and marshmallow treats, so the six remaining bakers have to create an ooey-gooey marshmallow dessert in a bright Easter color.

For Earth Day, the five bakers are celebrating the bounty of Mother Nature, starting with wondrous walnut desserts featuring an assortment of flower honeys. Then the competitors find themselves in a forest grove filled with wild berries, which they must use to flavor an enchanted forest cake with edible moss.

Pink is the color of spring, and rose is the perfect party wine, so the four remaining bakers are charged with making mini desserts featuring rose and cheese. Then it's off to the races in the spirit of the Kentucky Derby as the bakers make all-pink party desserts using pink ingredients.

Remaining bakers celebrate Mother's Day; competitors make baked items inspired by mai tais, mojitos or mimosas; they then use flavors inspired by Mom's favorite coffee drinks to create cakes featuring their Mother's Day gifts; the winner is chosen.

Eleven bakers celebrate the natural beauty of spring by making perfectly patterned spring fruit geometric tarts. Then they show off their skills by making trendy fault line cakes that feature spring transformations such as caterpillar to butterfly, rain showers into sunshine and bare trees bursting into bloom.

The ten competing bakers celebrate the spring equinox by first making colorful and delicious doughnuts themed to either sunrise or sunset. Then the theme is stargazing at night, and each baker is assigned a celestial event to bring to life in dessert form. There are shooting stars, the Milky Way, the Northern Lights, meteor showers and more.

It's raining cats and dogs as the nine competing bakers make "kittyclairs" -- eclairs with an orange kitty theme. Then they play puppy games, making desserts with sporty themes like a kayaking poodle and a tennis-loving Labrador.