Ageratum houstonianum

flossflower, ageratum

About the Flossflower, Ageratum

This is a classic annual plant that produces long lasting clusters of fuzzy flowers in shades of blue, purple and white over dusty green foliage. Excellent in sunny borders and edges. Grow as “filler” accents in containers.


Care Notes

Plant in well-drained, amended soil. Water well after planting; maintain 1” of water once a week throughout the growing season. Deadhead as needed. Feed with a slow release fertilizer, Osmocote® or Plant-tone®. Follow label instructions. Mulch 2″ to suppress weeds, retain moisture and protect against extremes of soil temperature.

Planting For Success

Angelo's Planting Guide

We want your new plants to look as amazing at home as they do in our garden centers! And we know the level of care taken when planting can make all the difference. Follow Angelo's six easy steps for best results and performance.

Read the Full Guide

  • Sun to Part Shade
  • Spring to Frost
  • 4-6"
  • 6-12"

Recommended Product

Companion Plants

Plant with other deer resistant annuals: Verbena (spiller) and Cleome (thriller).