Ageratum - my go-to blue for summer and fall

Now that we are into August, one of my favorites - Ageratum - is hitting the bouquets big-time. I just love this soft, powdery grey-blue gem. What a heart it has! Keeps on blooming until frost, but makes a very immediate departure at that time. My mother used to grow Ageratum. Every summer, to complement her beautiful perennial beds and rock garden, she also planted an annual garden around our grass courtyards.  Every summer she went with a red, white and blue theme, using the low-growing white Alyssum, the medium-sized blue Ageratum, and the taller spikes of red salvia. Lots of planting. Lots of summer color. No mulch. At the time, mulch was not used nearly so much as it is today.  I cringe at the thought, but she was from Iowa, and whoever mulches their acres of corn?

The Ageratum I grow is hardly my mother's Ageratum. While puffy mounds of color were perfect for her garden beds, what I am looking for is far greater height.

My varieties of choice are either 'Blue Horizon' or 'Blue Planet.'

Every year I have roughly 300 Ageratum plants, from which i cut thousands of gorgeous stems of flowers. The touch of blue is a wonderful accent for the many bright summer - blooming flowers, but also goes beautifully with the softer tones, such as the rose, peach, and white zinnias.  It looks equally nice with some lime green zinnias.




As we move later into August, and on into September, Ageratum adds a lovely touch to many dahlia-centric arrangements and bouqets.

It looks fabulous with white, lavender, peach, and almost any color at all.


Come fall, when we find the gardens moving into the more bronzy tones, I find Ageratum continues to shine.  It so very often adds just the right touch of contrasting color to make everything else really pop to life. From October Dahlia bouquets and arrangements into November Chrysanthemum presentations, Ageratum makes a welcome splash. While this gathering of autumn color would be marvelous on its own, doesn't it gain from the little hints of blue afforded by a sprig or lavender statice and some of that powdery blue Ageraturm?