DetailsGladiolus Traderhorn is a brilliant scarlet gladiolus, with crisp white contrasting centers and tall, and tall, straight flower spires. Traderhorn is tall and stately, with up to two dozen 4-5" blooms on each stem. A garden favorite, these large, fire engine-red flowers with white throats will make a dramatic cut flower. Plant in spring, in groups of six or more. Gladiolus are easy to grow and prefer full sun and well-drained soil. Plant in two week intervals for extended bloom season and continuous availability of fresh cut flowers; stake flowers when needed. Gladiolus are cold hardy in zones 8-10. In colder areas, lift the bulbs and store in a cool place over the winter.
|Common Name||Gladiolus Traderhorn|
|Botanical Name||Gladiolus Traderhorn|
|Zones||8, 9, 10|
|Ships As||Bulb, Rhizome, Tuber|
|Light Requirements||Full Sun|
|Mature Height||48-56" 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|
|Advantages||Deer Resistant, Attract Hummingbirds, Easy to grow, Good for Cut Flowers, Extended Bloom Time (more than 4 weeks)|
|Additional Information||Grow as an annual in zones 3-7. Cold hardy in zones 8-10.|
|Ideal Region||Northeast, 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. Spring-Planted Perennial and Bulb orders will ship from February 27-June 30, warmest zones first. Most plant orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.
Grass Plugs Will ship at planting time in spring 2017, beginning in late February.
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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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