Black Beauty Gladiolus
DetailsBlack Beauty Gladiolus (Gladiolus x hortulanus ‘Black Beauty’) adds a dramatic twist to the back border of a garden with its tall blooms in dark velvety burgundy. Also known as Sword Lilies, Gladiolus are lovely against the greens of perennial foliage, as a stand-alone focal point, or mixed with Allium, ornamental grasses, Agastache and Salvia for a sweet summer treat. Historically, Gladioli have been grown in or near vegetable gardens as they attract beneficial insects and pollinators for increased yield. Easy-to-grow and deer resistant, plant Gladioli in 2--week intervals for a long season of bloom. For the best cut flowers, select stems with only a few open (or almost open) flowers. Cut the stems in the cool part of the day with a sharp knife and place each stem in lukewarm water with a flower preservative. Warm temperatures will encourage them to open, to preserve the flowers, move them to a cooler location and enjoy. 48-60" tall.
|Common Name||Black Beauty Gladiolus|
|Botanical Name||Gladiolus Black Beauty|
|Zones||7, 8, 9, 10|
|Ships As||Bulb, Rhizome, Tuber|
|Light Requirements||Full Sun|
|Mature Height||56-60" tall|
|Bulb Size||12-14 cm|
|Bulb Spacing||4 bulbs per sq. ft.|
|Planting Depth||Plant 8" deep|
|Bloom Time||Mid summer until frost|
|Days to Bloom||60-100 days after planting|
|Planting Time||Spring / Summer|
|Soil Type||Sandy Soil, Average Soil|
|Soil Moisture||Average, Well Draining|
|Amount of Rain||20 to 30", 30 to 40", 40 to 50"|
|Advantages||Deer Resistant, Attract Hummingbirds, Easy to grow, Good for Cut Flowers, Extended Bloom Time (more than 4 weeks)|
|Additional Information||Hardy in zones 7-11|
|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.
Growing Gladiolus: After spring frosts are over, plant the gladiolus corms (bulbs) in your flower bed wherever you want brilliant color in mid-summer. Gladiolus take very little space in the garden and can easily be planted between other plants. After planting, keep the bulbs watered regularly. Soon you’ll have bright sword-like foliage and brilliant blooms. Gladiolus corms are inexpensive, and provide excellent color for the cost. As frost threatens, you can just forget them, and replace them with new bulbs next growing season, or dig up the corms and store them in a cool try 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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