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Ageratum

Ageratum houstonianum
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Ageratum

Ageratum is such a little workhorse that nearly every garden should have some. This annual is an easy to grow, old-fashioned favorite that produces a steady show of colorful powder-puff like flowers from late spring through frost. It's also rarely bothered by pests so you count on it to look good. Plus, it provides some of the truest blues you can find in flowers -- a rare thing.

Plant in spring after all danger of frost has passed. Plant in groups of a dozen or more for best show. Deadhead and fertilize regularly for best blooms.

Light:
Sun, Part Sun
Plant Type:
Annual
Plant Height:
6-36 inches tall, depending on variety
Plant Width:
6-18 inches wide, depending on variety
Flower Color:
Blue, lavender, white, or rose blooms, depending on variety
Bloom Time:
Blooms all summer and into fall
Landscape Uses:
Containers, Beds & Borders
Special Features:
Flowers, Easy to Grow

Top Varieties


(Ageratum 'Blue Danube') bears lavender-blue flowers and grows only 8 inches tall.
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(Ageratum 'Hawaii White') grows 6-8 inches tall and has white flowers.
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Plant It With


Salvia

Ageratum is a great partner for blue salvia, which has flowers that color-coordinate perfectly.

French Marigold

A classic combo, silvery dusty miller foliage is a perfect accent to ageratum's fluffy blooms.

French Marigold

Create a bold contrast against ageratum's blue flowers with easy-growing orange or yellow marigolds.

Annual vinca

Annual vinca, especially pink and white varieties, look great against ageratum blooms.

Propagation


Seed

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