Dahlia Tuber Shop — 2026 Season
Our dahlia tubers come from 19 raised beds in Santa Cruz, California, tended by hand through a full season before we dig them up in November. If you can, come and cut a bouquet here!
Dahlia tubers from this year’s crop will be listed in November, but the best time to get ready is right now. Today. While you’re here. Don’t wait.
Browse the varieties below and add your favorites to your wishlist. It’s free and no obligation to purchase.
When we update our stock in November, you’ll be notified immediately — no waiting, no checking back, no missing out on a variety that sells out in the first hour.
Early access to the tuber shop is reserved for Dynomite Farm members. If you want to be ready when November arrives, a Supporting Membership is the way in.
A Supporting Membership gives you early dahlia tuber shop access so you can buy the moment our store opens, before the general public sees it.
Every dahlia tuber for sale in our shop comes from the same beds we cut flowers from throughout the season. We grow with organic principles in 19 raised beds in Santa Cruz, CA.
We dig, divide, and inspect every tuber by hand, typically in late October. We store them overwinter in our climate controlled storage facility. We have growing notes on our website for easy planting instructions, direction and tips.
Our dahlia tubers for sale span a full range of forms and sizes. From dinner plate varieties to ball and pompon types.
Every variety listed in our shop was grown here on the farm and selected for its performance in zone 9b conditions. If it doesn’t thrive in our beds, it doesn’t make the list.
Dahlia tubers planted in coastal California typically go in the ground between mid-March and early April, once soil temperatures reach 60 degrees. In zone 9b, that window is reliable and the long growing season means blooms from July through October.
Plant in full sun with well-draining soil and consistent moisture once sprouts emerge. Stake dinner plate varieties early — stems get tall fast once the season hits its stride. Pinching the central shoot when plants reach 12 to 16 inches encourages branching and more blooms per plant.
Most of our customers grow in California, the Pacific Northwest, and similar mild climates. If you’re gardening in a colder zone, our tubers perform well with the same basic care — just adjust your planting date to your last frost. We’re happy to answer growing questions specific to your conditions.
For more on dahlia growing and variety information, the American Dahlia Society is good resource.
When shopping for dahlia tubers, look for firm, healthy necks with at least one visible eye. Avoid tubers that feel soft or show signs of rot. Our dahlia tubers are hand-inspected before listing — if it doesn’t meet our standards, it doesn’t ship.
We plant our dahlia tubers between mid March and early April, once soil temperatures hit 60 degrees and the forecast shows no rain for the following two weeks at a minimum. With a long season from July through October, one tuber produces dozens of blooms. Plant in full sun, in soil amended with compost, add bonemeal, and water consistently once sprouts emerge.
Reach out if you have questions about successful growing practices in zone 9B. We’re happy to help.
Dahlias are generous growers, but they reward good soil preparation. Before planting, work a generous amount of compost into your bed — we aim for at least 3 to 4 inches worked in to a depth of 12 inches. Well-amended soil holds moisture evenly, drains well after rain, and gives young tubers the nutrients they need to push up strong shoots.
Soil temperature matters more than calendar date. Wait until your soil reads at least 60 degrees at a 4-inch depth before planting. Putting tubers into cold, wet soil is the fastest way to lose them to rot. A simple soil thermometer takes the guesswork out completely and is worth every penny for the peace of mind.
