Dahlia tubers

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  • When to plant dahlias in portland oregon

    • When to plant dahlias in pots.

    How to grow dahlias in Oregon: Advice from 34 years of experience

    Swan Island Dahlias in Canby.

    How late can you plant dahlia tubers

  • Swan island dahlias
  • When to plant dahlias in pots
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  • When to plant dahlias in washington state

    • (Photos by Marcia Wescott Peck/Special to The Oregonian/OregonLive)

    CORVALLIS, Ore. – In the garden of Laura and Mark Oldenkamp 400 dahlias bob with blooms as small as golf balls and as large a dinner plates.

    “We love how diverse they are,” said Laura Oldenkamp, an Oregon State University Extension Service master gardener.

    “There’s an enormous variation in color, form and size. It’s really astounding.”

    She's not kidding. Intricate swirls of petals arrange themselves in so many designs it takes 19 categories to classify them, those further divvied up into 10 sizes and 15 colors.

    Pompoms, collarettes, mignons, waterlilies: The names are as colorful as the blooms they describe. Perusing catalogs or visiting Swan Island Dahlias in peak bloom will help you discover your favorites and could set you down the dahlia path along with the Oldenkamps.

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    The couple began growing dahlias 34 years ago as newlyweds and floundered for the first few years until they hooked up

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