Marble Ball Dahlia
DetailsMarble Ball Dahlia flowers profusely from July until frost with rounded, almost spherical blooms of purple and white. A fabulous cut flower, deadhead spent flowers to promote more blooms. In cut flower arrangements, mix with Dahlias that differ in shape and harmonize in color for a dramatic effect. Full sun locations are best, but light shade is perfect in hot summer areas. Protect plants from high winds by planting near a wall or a sheltered area. Plant with Crocosmia, Calla Lily, Rudbeckia and Agastache. 28" tall x 12-24" wide.
|Common Name||Marble Ball Dahlia|
|Botanical Name||Dahlia Marble Ball|
|Zones||2, 3, 4, 5, 6, 7, 8, 9, 10|
|Ships As||Bulb, Rhizome, Tuber|
|Light Requirements||Full Sun|
|Mature Height||36-48" tall|
|Bulb Spacing||1 bulb / tuber per sq. ft.|
|Planting Depth||Bulbs / Tubers should be planted 1-2" below the soil line.|
|Bloom Time||Mid summer until frost|
|Flower Size||Up to 4" flowers|
|Planting Time||Spring / Summer|
|Soil Type||Sandy Soil, Compost Enriched Garden Loam Soil, Acidic Soil|
|Soil Moisture||Average, Well Draining|
|Amount of Rain||10 to 20", 20 to 30", 30 to 40", 40 to 50"|
|Advantages||Attract Butterflies, Easy to grow, Good for Cut Flowers, Extended Bloom Time (more than 4 weeks)|
|Ideal Region||Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest|
|Ships to Hawaii, Alaska & Canada||No|
Summer Blooming Bulbs, including popular varieties such as gladiolus and dahlias, are planted in the spring and bloom in the summer. Most of these bulbs are tropical and require warm weather to be planted. There must not be any danger of frost and your ground temperature must have reached 55 degrees Fahrenheit before planting. Many of our summer blooming bulbs can be planted as perennials in zones 9-10 (zone 8 if mulched), but should be treated as annuals in cooler climates. You can lift them and store them in the fall, or bring patio pots inside before frost. See page 15 of our Planting Guide for a bulb depth planting illustration. Read our article about How To Grow Dahlias.
Growing Dahlias: Plant Dahlia tubers after spring frosts in good garden soil with full sun. Dahlias must be protected from high winds, so we suggest you position them against a wall or be ready to stake them. Keep the plants well-watered and free of bugs, applying flower fertilizer as they grow. Your dahlias will be in full bloom by July or August, with the enormous flowers continuing to bloom until frost. As frost threatens, pull up the roots and trim off the stems. You can store the tubers in a cool dry place until the following spring.
View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Expected ship week will display on the cart at checkout after you enter your zip code. Spring-Planted Perennial and Bulb orders will ship from Feb 25 through mid-June, warmest zones first.
Most plant and bulb orders arrive within 2-6 days, or less, of leaving our greenhouses in Colorado. This prompt delivery is provided without additional express charges.
Grass Plugs Will ship at planting time in spring, beginning in late February.
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Standard shipping costs are $4.99 and up, depending on the size of the order.
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USDA Hardiness Planting Zones
To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.
- If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
- If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).
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