Ageratum, Floss Flower, Flossflower 'Blue Horizon'

Sunlight: full sun or part shade. Prefers warm weather. In very hot climates, prefers part shade.

Special locations: outdo...Read Moreor containers, xeriscapes.

Special characteristics: deer resistant, non-aggressive, non-invasive, & native to North America - Mexico

How to plant: Propagate by seed - Start seeds indoors 6 to 8 weeks before last frost, do not cover seeds, as they need light to germinate.

Germination temperature: 70 F to 75 F
Days to emergence: 5 to 10
Ease-of-care: easy.
Maintenance and care: Pinch back plants to keep rounded and bushy, deadhead to keep in flower.

Pests: Spider mites, Whitefly .

Susceptable Diseases:
Oedema
Parasitic nematodes
Powdery mildew
Root rot

height on seed packet says 30" and mine have grown that tall, but want to lean to ground rather than stand upright. branches will grow u...Read Morepright off any branch that goes over sideways. I do not find folliage attractive, tends to curl inward, maybe something wrong with them. I would call color "periwinkle" lavender/blue, the plants saving grace. The flowers look almost fluorescent in the late afternoon/early evening light. OK if something is planted in front of them to hide folliage. I will probably not buy again.

Zone 9b - This has been a no care plant for me. Blooms year round with minimal care. I love it! It spreads and stays low. Looks reall...Read Morey good with pinks. SILady

Something about the tall ageratums that I prefer over the short bedding types. 'Blue Horizon' is a great cultivar. It blooms all summer, ...Read Moremakes great cut flowers, and the butterflies LOVE it. It grows 16-18 inches tall and is a wonderful garden plant. It's seeds are sterile so don't bother collecting them... buy from a reliable source.