Roberta's 75-piece Sub Zero Hardy Gladiolus

Previously recorded videos may contain expired pricing, exclusivity claims, or promotional offers.

product thumbnail

Whether you love the cold or merely tolerate it, you'll find these gladiolus flowers feel the same way. These beautiful blooming plants from Roberta's can tolerate to -15F, so no matter the temperature this winter, you'll have color gracing your garden this summer. From Roberta's.

  • Type: perennial
  • Uses: borders, walkways, rock gardens, containers, bouquets
  • Shipped as: 75 bulbs of assorted colors
  • Zones: USDA hardiness zones 5 through 10
  • Spacing: 12 bulbs per 1'/sq
  • Exposure: full sun
  • Water: ample water during the growing season
  • Fertilize: once a month all summer long
  • Blooms: July through September
  • Mature Height and Spread: 12"H to 18"H with a 6"W to 7"W spread
  • Winterize: let them go dormant and remove winter foliage in the following spring
  • Attracts: butterflies, hummingbirds
  • Resists: rabbit
  • Drought Tolerant: yes
  • Heat Tolerant: yes
  • Fragrant: no
  • Edible: no
  • 1-year Limited Manufacturer's Warranty
  • Ships at the appropriate time for planting in your area
  • Cannot ship to PR, HI, VI, AK, Guam

Tune in to QVC for Patio & Garden

Saturday, February 24, 2018 from 4 – 6 a.m. ET and Sunday, February 25, 2018 from 2 – 3 a.m., 3 – 5 a.m., 7 – 9 p.m., 9 – 10 p.m. ET and Wednesday, February 28, 2018 from 2 – 3 a.m., 10 a.m. – Noon ET and Sunday, March 4, 2018 from 4 – 6 a.m. ET

Important Details

Roberta's "Gotta Grow" Guarantee

When you are happy, we are happy. Roberta's assures your satisfaction for its perennials for 1 year and its annuals for 90 days from time of shipment. If for any reason your results don't match your expectations Roberta's will replace it with a similar or comparable plant at no charge. If your replacement is not available or it is too late in the season to ship, it will ship the following season.

Delivery Date Estimate

Reviews & Community QA