Blue Planet Ageratum Seeds

4.875 out of 5 stars
(8 reviews)
Availability: In Stock
Long-lasting blooms like tiny explosions are out of this world in gardens or containers, and especially planted in mass. This tall ageratum branches without being pinched back and flowers prolifically. Accents well with bright white flowers in the garden bed or in bouquets.
$3.49 25 seeds

Botanical Name: Ageratum houstonianum (hybrid)

Family: Asteraceae

Native: Southern Mexico, Belize, and Honduras

Hardiness: Annual

Plant Dimensions: 24"–30" tall, 8"–12" wide

Variety Information: ½" bluish-purple pom-pom-like flowers with feathery petals borne in clusters.

Exposure: Full sun to part shade

Bloom Period: Summer to frost

Attributes: Attracts Pollinators, Attracts Beneficial Insects, Cut Flower, Deer Resistant, Rabbit Resistant

When to Sow Outside: Not recommended except for very mild climates, 2 to 4 weeks after your average last frost date.

When to Start Inside: RECOMMENDED. 6 to 8 weeks before your average last frost date. 70°F is ideal for germination.

Days to Emerge: 7–10 days

Seed Depth: Press seed into soil surface

Seed Spacing: A group of 3 seeds every 12"

Thinning: When 2" tall, thin to 1 every 12"

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Blue Planet Ageratum Seeds Reviews

8 reviews

Flowers Make a House a Home

5 out of 5 stars Jul 20, 2018
My Father said, "Flowers make a house a home. " How true....the happiness of pretty flowers . Ageratum are a great cut flower because they last longer than I expected. Their softness fits in small spaces.
Molly Peckels from NC

super ageratums

5 out of 5 stars Jul 16, 2020
These larger ageratum are wonderful in planters initially as they "fillers" but later on, as the "spillers" in pots. Lots of blue and they last a long time. Just starting to need to dead head and they've been blooming since early May!
Geoffrey Selling from PA

Blue Planet Ageratum

5 out of 5 stars Jul 17, 2020
I love the color blue in my garden beds and this blue is amazing! I love it so much I shared some of the seeds with a friend. Almost every seed I started in my basement germinated which made for much blue in my border bed!
Angela M Gruesen from OH

They just kept blooming!

5 out of 5 stars Jan 13, 2021
Zone 7a. I started these indoors in February and transplanted to the garden in mid April. The blossoms make a big impact in the garden and draw pollinators. They were still blooming in late November.
Alice L Gambino from MD

Love these

5 out of 5 stars Sep 26, 2021
Second year I have grown these. Look great in the garden and great in arrangements.
Roxanne from ME

Blue Planet Ageratum

4 out of 5 stars Oct 27, 2021
I winter-sowed in milk jugs and only planted out a few plants because I wasn't sure where to put them. Mine are not as tall or wide as the dimensions on the website said but they are very pretty and still blooming at the end of October.
Angela from NC

I love this plant!

5 out of 5 stars Oct 31, 2021
I've always loved the blue of ageratum but disliked the short, stubby varieties commonly available. I've also wanted a blue flower for bouquets along with my tall Sunni as and dahlias. Well, along came Blue Planet and I was solo happy! I find it easy to grow, even in the heat and humidity of the South. It's a lovely looking plant even in the garden.
B. from NC

Little Purple Fluffballs of Delight

5 out of 5 stars Nov 10, 2021
These were so pretty and delightful! The purple is almost a neon color. They lasted all summer and just looked gorgeous. They also made pretty pressed flowers. Small, bright, and not fussy --- I highly recommend!
Grace Wright from CO
Owner Response: Thanks so much for sharing your experience!

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