Pair the popularity of locally sourced goods with the increasing visibility of dahlia varieties, and you’ve got one very happy Colorado flower farmer.

Photos and story by Stephanie Powell

Everywhere you look, there are flowers. Pale and bright yellow sunflowers towering above your head. Rows of eye-catching zinnias and knee-high snapdragons. Bunches of delicate purple, white and pink lisianthus. And, of course, dahlias. Acres of them. In every shape, size and color imaginable: tightly curled cactus dahlias; ball, collarette and waterlily varieties; not to mention rows and rows of dinner plate–size blooms.

This is the scene from the heart of one of Northern Colorado’s premier flower farms, Arrowhead Dahlias. Owned and operated by husband-and-wife team Calvin and Julie Cook, this niche flower farm in Platteville currently grows more than 300 varieties of flowers on four acres of fields. Calvin, a dahlia devotee since childhood, is delighted people are finally falling for the allure of his favorite flower—with a little help from social media sharing and the buy-local trend driving shoppers to connect with their community.

The sheer variety and volume of flowers Calvin and Julie are able to produce on such a compact plot of land is due, in part, to their decades-long dedication to flower farming.

“I grew up on a dairy farm in Fort Lupton,” says Calvin. “We grew flowers and veggies around the house for fun.” Over time his father started experimenting with dahlias, eventually growing several hundred in their yard. “By the time I was 12, my father had joined the American Dahlia Society, so there I was—a kid—attending meetings, entering shows and pretty much engrossed in the industry.”

After graduating from Colorado State University with a landscape and horticulture degree, Cook initially thought he might go into the landscaping design business. He followed his heart toward flower farming instead. “I guess I was hooked pretty early,” he says. “Dahlias are so diverse. The excitement of growing a new variety and watching it open for the first time… each one is so unique.” So Cook began growing dahlias for himself in 2000 and shortly afterward started selling his extra tubers via a mail order catalog he sent out to other home gardeners.

In 2003 he married Julie, another horticulture alum from CSU, who had a long-standing affinity for perennials—and work history with an arboretum and wholesale nurseries. The two began growing flowers together, renting out a small field in Northern Colorado. A year later, they attended their first farmers market in Greeley where they received solid sales and positive feedback. Repeat customers kept buying out their blooms each week, and, by 2007 the business had grown enough to allow the Cooks to purchase their own farm.

Although domestically grown flowers account for an average of just 20 percent of cut flowers sold in the United States (most are shipped in from South America), consumers are starting to value them more and more. Like the trend in knowing where your clothes are made or where your food comes from, locally grown flowers are increasingly popular with buyers. “That interest,” says Cook, “has really helped our operation.” As has social media. Thanks to Instagram and Pinterest, more people are being introduced to the diversity of the flowers Calvin has adored since childhood. “People are seeing these unique dahlias online and then hunting them down from local growers.”

The Cooks’ dog, Peyton, romps through waist-high blooms on the four-acre farm.

Still, the fresh-cut flower business in Colorado is not an easy one. With hot, dry summers, wind along the plains, and random hail storms wreaking havoc on crops, the climate in Colorado isn’t ideal for flower farming. So the Cooks rely on heavy watering, lots of hand weeding, and a schedule that has them working 12-hour days nearly 10 months out of the year.

While December and January are “relatively quiet,” things pick up in February and March when the Cooks prepare for planting and begin selling tubers. By April, annuals like zinnias and snapdragons are starting in their greenhouse. And in May, after the thaws are over, planting in the fields begins. The dahlias start blooming in late July and continue through early October. During those months Calvin and Julie work seven days a week with one part-time seasonal worker. Then, when the growing season is over, they dig up all those tubers so they can be washed, labeled, and stored for replanting the following year. “I’m sure there are easier ways to make a living,” Cook says when asked about the never-ending workload. “This just happens to be the one we love.”

The Cooks’ harvest is bountiful enough that David ships dahlia tubers to customers in 47 states.

The Cooks’ affection for the flower business runs so deep that when you ask Cook to name his favorite dahlia variety, he goes quiet. It’s like asking a parent to pick his favorite child, impossible to answer. But watching Calvin and Julie work in their fields offers a few hints as to why they’ve dedicated their work lives to flower farming. The strong plants easily grow waist high, some reaching six or even seven feet. They bloom robustly until first frost, when other cutting flowers begin to fade. And their variety is so undeniably diverse, there’s a dahlia to please everyone. From the small, daisy-like blooms and varieties that resemble exploding fireworks to the massive giants with flowers more than a foot in diameter, they fit into any home garden. Not to mention that walking through the quiet fields during harvest season has got to be one of the prettiest working spaces there is.

After almost two decades in the flower growing business, Cook thinks he and Julie have “finally figured out a formula that works for us.” The Cooks’ reputation for supplying exquisite, long-lasting blooms has helped them establish partnerships with large wholesalers who supply florists all along the Front Range. Their attention to quality paired with the increasing popularity of locally grown flowers has also brought them a cult-like following at the Longmont Farmer’s Market. They regularly sell out of fresh cut flowers within a few hours on summer weekends. It’s fascinating to watch customers enter their booth. Some regulars walk right up, wave and ask for their “usual” order. Others linger as they debate between an abundance of showy individual stems or colorful, premade bouquets.

When considering the long term, Cook says he doesn’t have his eye on growing much bigger or branching out into too many different things. “We’ve both been in this industry for a long time, all our lives to some degree. I can’t imagine doing anything else.”

Growing Dahlias,
A Guide

With vibrant blooms in an endless variety of shapes, sizes, and colors, dahlias keep gardens full of color from late summer through fall. The following tips will help you get the most flower power out of these abundant bloomers.

  • Don’t rush planting. Wait to plant until after the last spring freeze.
  • Dahlias love full sun. Plant them where they’ll get at least six to eight hours of light.
  • Plant tubers with the growing points, or “eyes,” facing up.
  • Wait to water. Avoid rot by waiting until sprouts appear just above the soil.
  • Don’t put mulch or bark on top of newly planted tubers. Covering them can make sprouting more difficult.
  • Provide support. Place stakes around plants and tie stems to them as the plants grow.

Missed planting season? You can still grab gorgeous blooms from Arrowhead Dahlias at the Longmont Farmer’s Market, held from 8 a.m. to 1 p.m. on Saturdays, May through September.

Growing Dahlias, A Guide

With vibrant blooms in an endless variety of shapes, sizes, and colors, dahlias keep gardens full of color from late summer through fall. The following tips will help you get the most flower power out of these abundant bloomers.

  • Don’t rush planting. Wait to plant until after the last spring freeze.
  • Dahlias love full sun. Plant them where they’ll get at least six to eight hours of light.
  • Plant tubers with the growing points, or “eyes,” facing up.
  • Wait to water. Avoid rot by waiting until sprouts appear just above the soil.
  • Don’t put mulch or bark on top of newly planted tubers. Covering them can make sprouting more difficult.
  • Provide support. Place stakes around plants and tie stems to them as the plants grow.

Missed planting season? You can still grab gorgeous blooms from Arrowhead Dahlias at the Longmont Farmer’s Market, held from 8 a.m. to 1 p.m. on Saturdays, May through September.

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