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

Ageratum houstonianum

Ageratum houstonianum

a-jer-AY-tum hoos-tone-ee-AY-num Audio

There are many cultivars available of this fast-growing annual. They are best used as bedding, edging, or container plants. Panicles of blue, pink, purple, or white flowerheads arise from oval, downy leaves in midsummer and continue until frost. They have a soft, fuzzy appearance and attract butterflies.

Noteworthy CharacteristicsFast grower. Mexican native.

CareGrow in full sun to partial shade in fertile, moist but well-drained soil.

PropagationSow seed at 61° to 64° F in early spring.

ProblemsSouthern blight, crown rot, root rot. During cool, wet weather Botrytis blight is a problem, while rust can be troublesome during dry summers.

  • Genus : Ageratum
  • Zones : 10, 11
  • Plant Height : 6 to 12 inches
  • Plant Width : 6 to 12 inches
  • Plant Type : Annuals
  • Uses : Containers
  • Bloom Time : Early Fall, Fall, Summer
  • Growth Rate : Fast
  • Light : Full Sun to Partial Shade
  • Moisture : Medium Moisture
  • Maintenance : Moderate
  • Flower Color : Pink, White
  • Plant Seasonal Interest : Summer Interest
View Comments


  1. sooshi 09/13/2014

    This is a great guide, thank you. I can't find zone listed here.

Log in or create an account to post a comment.

Related Plants

Related Articles

More From the Plant Guide

Winter Interest

Partial Shade

Browse the Full Plant Guide