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Extreme Gardening

  • Cedar Rock Gardens 299 Concord Street Gloucester, MA, 01930 United States (map)

Join extreme gardener Sarah Whitty for an exciting deep dive into the world of growing giant pumpkins and supersized vegetables! Sarah holds a personal best pumpkin of 1593.5 pounds and has pushed the limits on her compact 0.15-acre plot in Maine, proving you don’t need a huge space to achieve jaw-dropping results.

She’ll guide you step-by-step through the entire process: selecting the right seeds, preparing your patch in spring, the critical role of soil testing and amendments, strategic pruning to focus energy, nurturing explosive growth (over 50 pounds a day!), and the art of safely lifting and harvesting these gentle giants. Sarah will also share her experiences growing other record-breaking giants, like her giant marrow (zucchini) that surpassed the U.S. record weight but was disqualified due to a minor split.

This addictive hobby is open to all levels-whether you’re a beginner or seasoned grower. Free seeds will be available for anyone eager to start their own giant-growing adventure.


Sarah Whitty is a physician assistant and extreme gardener from Veazie, Maine. As president of the Maine Pumpkin Growers Organization, she leads the state’s giant-fruit community through education, seed sharing, and events.

On her compact 0.15-acre plot, Sarah has achieved remarkable success, including a personal-best 1593.5-pound Atlantic Giant pumpkin (2024), state record tomato (5.19 pounds), and record-setting giant marrows. What started as a fun experiment over a decade ago has become a passionate pursuit, blending science, competition, and nature’s extremes.

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April 18

Gardening with Kids / Afternoon Session

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Hatchery Production of Juvenile Lobsters