Dondo Blue Ageratum


Dondo Blue Ageratum

Ageratum houstonianum
(40 days from transplanting) Annual. Also known as Flossflower. A cutting ageratum with long stems. Covered with blossoms, great for summer borders. Fuzzy lavender-blue blooms hold nicely, even through a rainy summer, all the way from late July till October's killing frost. About 7,000 seeds/g.

4811 Dondo Blue
Item Discounted
A: 0.1g for $3.15   
B: 0.5g for $6.50   
C: 2g for $10.50   

Additional Information


~7,000 seeds/g.

Annual. Its name means ‘not growing old’ as the flowers retain color for a long time. Also known as Flossflower. Covered with blossoms, great for summer borders.

Culture: Start indoors at 80° for 6–8 weeks before last frost; grow on at 60–65°. Set 9–12" apart. Likes full sun. Water in hot weather. Extreme temperatures inhibit flowering. Will not tolerate frost. Cut for vase when flowers are first opening.


All flowers are open-pollinated except where noted.

Days in parentheses after a variety indicate days to first bloom.

Germination Testing

For the latest results of our germination tests, please see the germination page.

Our Seeds are Non-GMO


All of our seeds are non-GMO, and free of neonicotinoids and fungicides. Fedco is one of the original companies to sign the Safe Seed Pledge.