Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Audio Play Icon Headphones Icon Plus Icon Minus Icon Check Icon Print Icon Note Icon Heart Icon Filled Heart Icon Single Arrow Icon Double Arrow Icon Hamburger Icon TV Icon Close Icon Sorted Hamburger/Search Icon

The Plant Guide

Browse the Full Plant Guide

‘Atom’ Gladiolus

Gladiolus 'Atom'

glad-ee-OH-lus Audio

A glad for people who would normally never grow them, ‘Atom’ is about half the size of regular varieties, growing to at most 3 feet tall. This 1946 classic blends easily into perennial borders, and it won’t get lost because its flowers are blazing red cooled by a thin, silvery edge.

Noteworthy CharacteristicsShorter stature than most glads, with an eye-catching flower color that nevertheless fits well into borders.

CareFull sun to part shade in fertile, well-drained soil. Treat as annuals, or dig up and store 6 weeks after bloom (dip in fungicide and allow to dry for a few weeks).

PropagationSow seed at 59°F in spring. Separate cormlets when dormant.

ProblemsGladiolus corm rot (Fusarium), gray mold (Botrytis), viruses, aster yellows, spider mites, thrips, aphids.

  • Genus : Gladiolus
  • Plant Height : 1 to 3 feet
  • Zones : 10, 8, 9
  • Plant Width : 6 to 12 inches
  • Light : Full Sun to Partial Shade
  • Moisture : Medium Moisture
  • Growth Rate : Moderate
  • Maintenance : Moderate
  • Plant Type : Perennials
  • Flower Color : Red
  • Bloom Time : Summer
  • Plant Seasonal Interest : Summer Interest

Plant Characteristics are only available to Fine Gardening members

Sign up for a free trial and get instant access to our complete plant guide as well as our entire collection of articles and videos.

Start Free Trial

Related Plants

Related Articles

More From the Plant Guide

Winter Interest

Partial Shade

Browse the Full Plant Guide