Purple Dahlia Tubers
Mixed Sizes / Shades / Shades of Color
Stunning Purple Dahlia Tubers – Add a Regal Touch to Your Garden
Elevate your garden with the rich, vibrant hues of purple dahlia tubers. These exquisite blooms showcase shades of deep violet, lavender, and plum, creating a striking contrast against lush greenery. Their bold, full petals make purple dahlias a standout in any landscape or floral arrangement, bringing an air of sophistication and elegance to your garden.
Easy to grow and incredibly versatile, these premium-quality tubers thrive in full sun and well-drained soil, producing breathtaking flowers from mid-summer through fall. Perfect for borders, garden beds, or as cut flowers in bouquets, purple dahlias are sure to make a statement wherever they're planted.
Tuber Pack Options: Available in packs of 1, 5, 10, or 20 tubers
Planting Tubers
Dahlias typically take 90 to 120 days from planting to fully bloom, depending on the variety and growing conditions. After planting tubers in spring (after the last frost), you can expect to see the first flowers by mid to late summer, with continuous blooms lasting until the first fall frost. Proper sunlight, well-drained soil, and regular watering help ensure healthy growth and vibrant flowers.
Climate Zones
Dahlia tubers should be stored in a cool place (DO NOT FREEZE) and planted in the spring after the last frost when the soil has warmed to at least 60°F (16°C). Here’s a general guide based on USDA hardiness zones:
When to Plant Dahlia Tubers by Climate Zone
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Zone 3-5 (Cold Climates) → Late May - Early June
Start tubers indoors 4-6 weeks before the last frost and transplant when the soil warms up. -
Zone 6-7 (Moderate Climates) → Mid to Late April
Plant tubers once the risk of frost has passed and the soil is warm. -
Zone 8-9 (Mild Climates) → March - Early April
Plant directly in the ground after the last frost or start earlier in containers. -
Zone 10-11 (Warm Climates) → Late February - Early March
Dahlias can be planted earlier, but they may struggle with extreme summer heat—provide afternoon shade if needed.
For colder zones (3-7), tubers must be dug up and stored before the first frost in fall, while in warmer zones (8-11), they can often be left in the ground year-round with proper mulching.
Growing Guidance
To grow healthy and vibrant dahlias, they need:
- Full Sun – At least 6-8 hours of direct sunlight per day.
- Well-Drained Soil – Loose, fertile soil with good drainage; slightly acidic to neutral (pH 6.5-7.0) is ideal.
- Proper Spacing – 12-24 inches apart, depending on the variety, for good air circulation.
- Regular Watering – Deep watering 2-3 times per week, keeping soil moist but not soggy.
- Support for Tall Varieties – Staking or caging taller dahlias to prevent them from falling over.
- Balanced Fertilization – Low-nitrogen fertilizer (5-10-10 or 10-20-20) every few weeks for strong blooms.
- Pinching & Deadheading – Pinch young plants for bushier growth and remove spent flowers to encourage continuous blooming.
- Pest & Disease Control – Watch for aphids, slugs, and powdery mildew; use organic or chemical treatments as needed.
- Frost Protection – Lift and store tubers in cold climates before the first frost for next season’s planting.