RM James dahlia tuber
RM James dahlia tuber
RM James Dahlia tuber
RM James is a flower that catches your attention twice.
First, it's the beautifully round, full shape of the bloom that makes you stop. Then, as you look closer, you begin to notice the remarkable array of colors moving through the flower — warm yellows, pinks, and reddish peaches creating a bloom that feels different from one flower to the next.
A 4-inch bloom held on a tall, elegant plant, RM James brings both presence and color variation to the garden. It's the kind of dahlia that rewards a closer look, because the longer you study the bloom, the more color you begin to see.
Plant Height: 5 ft
Bloom Size: 4 in
Bloom Type: Round
Color: Yellow, pink, and reddish peach
Release Year: 2025
Provenance
RM James is a 2025 introduction from River Merle Farm, bred by Hailey Sly. Our tuber stock came directly from River Merle Farm, giving us true genetics from the source.
Pedaling Petals is a licensed seller of River Merle dahlias. A portion of every sale goes directly back to Hailey to support her ongoing hybridizing program.
For us, provenance is part of the story. We want you to know not only what you're growing, but where it came from and who created it. When you purchase RM James from Pedaling Petals, you're connected directly to the work of a hybridizer whose introductions we grow, observe, and share from our own gardens.
New to growing dahlias? Start here!
New to growing dahlias? Start here!
Learn how to plant, water, support, and bloom beautiful dahlias — even as a beginner.
Join our Beginners guide to dahlias email course to learn how to grow dahlias with us!
New to growing dahlias in Colorado?
New to growing dahlias in Colorado?
Dahlias thrive in Colorado with the right care! Plant after frost, amend clay soil, water deeply, and stake for Colorado winds.
Learn more in our Colorado dahlia growing guide.
Colorado is an ideal place to grow dahlias — long sunny days, dry air, and a long bloom season from July through October. This guide covers how to plant and care for dahlias in Colorado, including frost timing, clay soil amendments, watering schedules, heat & shade tips, staking for wind, dividing & storage, and managing pests. Local insights for Denver, Boulder, Colorado Springs, Grand Junction and the Western Slope.
Ready to grow your own? Pre-order Colorado dahlia tubers for spring planting.
Sustainably grown
Sustainably grown
Pesticide, herbicide, and synthetic fertilizer free grown. No till, locally made compost, leaf mulch, companion planting, and healthy BRIX plants growing methods.
Dahlia virus management program
Dahlia virus management program
Questionable dahlia plants are immediately culled. Cutting snips in 10% bleach solution for 2 minutes between harvesting flowers, between plants, and between division of one tuber clump to another. Preventative insect management via soil health, companion planting, attraction of benificial insects and birds, and plant BRIX number management.
Blog post - Our approach to dahlia virus.
Shipping rates
Shipping rates
Local Pickup:
Free
Colorado shipments
- $9 for order value $0-$75
- $12 for order value $75+
All other states:
- $12 for order value $0-$75
- $17 for value $75+
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