Panicles of blue, pink, purple, or white flowerheads arise from oval, downy leaves in midsummer and continue until frost. No serious insect or disease problems. [4][5][6][7], Ageratum conyzoides and Ageratum houstonianum are prone to becoming rampant environmental weeds when grown outside of their natural range. Find help & information on Ageratum houstonianum 'High Tide Blue' from the RHS Good for beds, borders, pathways and rockeries. There is also a medium height snowcapped variety, white top on blue flowers. The narrow lanceolate bracts are pointed, denticulate only at the top and glandular hairy. Aloha is early to flower and suited for growing in packs and in 10 cm (4 in.) The Ageratum houstonianum or Floss Flower as it is more commonly known, belongs to the Asteraceae family - the same very special family to which the Daisies, Asters, Gerberas, Chrysanthemums and so many others all belong. 68: 6. Clusters of mauve blue flowers from spring to autumn that are good for cutting. Plant in a sheltered postion in full sun. They are about 18 inches in height with blue flowers. Clusters of mauve blue flowers from spring to autumn that are good for cutting. It is a Native plant of Mexico. A lovely addition to cottage gardens and wildlife borders. Ageratum houstonianum 'Blue Horizon' F1. With a dense, compact habit, Ageratum houstonianum 'Blue Danube' is perfect for adding texture and colour to bedding, borders and containers. It is native to Mexico and Central America. Floss Flower is sometimes cultivated and is often a weed in nursery stock. Characterized by their powder-puff flowers, these plants begin to bloom in late spring and keep the show going until the first frost. They give small, dry fruits. Spread: 30cm (12"). Useful Links: How to sow flower seeds Reasons to buy your seeds from Thompson & Morgan. Uses. Description; Description (Ageratum houstonianum) SPECIAL QUALITIES. Ageratum houstonianum Mill. Plant in a sheltered postion in full sun. The ray flowers are threadlike and fluff-haired, leading to the common name. One of the tallest, Ageratum houstonianum 'Blue Horizon' (Floss Flower) features fluffy round clusters of lavender to purplish-blue flowers resembling asters. Learn More in these related Britannica articles: Asteraceae. Growing On:Grow on at temperatures of 60-68 °F (15-20 °C). A great value plant that is free flowering and easy to grow. Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly rounded clusters atop compact, mounded plants generally ranging from 4 to 18 tall. The plant grows to 0.3–1 m high, with ovate to triangular leaves 2–7 … Bloom Time: Late spring to frost. Acamovic, T., Stewart, C.S., Pennycott, T.W.,"Poisonous Plants and Related Toxins", 2004. With a vigorous, open habit, it’s perfect for adding texture and colour to bedding, borders and containers, and is extremely attractive to pollinators. Tall ageratum are also available in seed catalogues. Will do well if grown in a pot or container. F1 Hybrids 'Blue Angel' This annual grows to 250 mm (9¾ in) tall and produces lavender blue flowers. Ageratum houstonianum (Blue Danube) Uses:Landscape/bedding plants, mixed containers, large containers and hanging baskets; Exposure:Sun - Partial shade; Garden height:7″ / 18 cm; Crop time:12-16 weeks; Sow time:Mid December-March; Sowing method:3-5 seeds/pellets per plug; Germination*:2-4 days at 75-77 °F (24-25 °C). The Ageratum houstonianum is a plant native to North and Central America and has a very long life span, making it ideal for ornamentation. ... blue ageratum grows in compact mounds that generally reach a height of 1-2 feet. Plant Habit : Upright. Ageratum houstonianum has numerous sticky hairs on the bracts surrounding its flower-heads (the involucral bracts are glandular pubescent). Spacing : 12 - 18" (30 - 46cm) Height : 14 - 16" (36 - 41cm) Width : 12" (30cm) Exposure : Sun. Beds and borders, City, Containers, Cottage/Informal, Hanging baskets. Ageratums are grown for their flowers, especially A. houstonianum. Planting Zones . ageratum houstonianum - Buy this stock photo and explore similar images at Adobe Stock To add more height to your flower beds, choose a variety such as "Blue Horizon" and "Red Top," which reach heights of 24 to 30 inches. Zones: Usually grown as an annual; perennial in Zones 10-11. Most common ageratums, "Hawaii" for example, are a short 6-8 inches when full grown. Panicles of blue, pink, purple, or white flowerheads arise from oval, downy leaves in midsummer and continue until frost. To add more height to your flower beds, choose a variety such as "Blue Horizon" and "Red Top," which reach heights of 24 to 30 inches. Ageratum Houstonianum Posted on November 18, 2008 | Leave a comment The flossflower species is an annual that grows to a height of over 2 ft (0.6 m), has blue flowers, and tends to become a pest as it liberally reseeds itself all over the garden. Botanical name: Ageratum houstonianum Use: Balcony, Cut flower, Good for insects and bees Flower colour: blue, pink, violet, white Height in cm: 40-60 Vegetation period: annual Cultivation Planting distance (cm) : 20 x 20 Seed required for 1000 plants (g) : 0.2 Sowing depth : germinates in light Ageratum houstonianum 'Timeless Mixed' is ideal for filling gaps in borders, adding height and texture to informal planting schemes. A great value plant that is free flowering and easy to grow. A nonstop bloomer from mid summer to fall, it grows easily in shapely mounds, up to 18-30 in. Grow Ageratum houstonianum ‘Blue Mink’ in moist but well-drained soil in full sun. Seed may be started indoors in late winter and transplanted outdoors after threat of frost has passed. Not to mention, ageratum is one of the truest blue annuals you can find! An old favorite with its fluffy round clusters, Ageratum houstonianum (Floss Flower) is one of the few annuals to tolerate light shade. The stems and leaves are covered with fine white hairs; the leaves are egg-shaped with broad end at base (ovate) up to 7.5 cm long. Key Features: The Dressed to Impress™ range provides you with a living bunch of flowers. The opposite leaves are cordate or oval, hairy or tomentose. Ageratum (/ ə ˈ dʒ ɛr ə t ə m /) (whiteweed in the USA) is a genus of 40 to 60 tropical and warm temperate flowering annuals and perennials from the family Asteraceae, tribe Eupatorieae. Zones: Annual in Zones 2-11, may overwinter in Zones 10-11. Most common ageratums, "Hawaii" for example, are a short 6-8 inches when full grown. They are best used as bedding, edging, or container plants. The flowers are blue, purple, lilac and cream colors. is a cool-season annual plant often grown as bedding in gardens. Ageratums are easily grown from seed. Garden Ready Plants - Our garden ready plants are selected for garden performance, straight from the nursery. Ageratum houstonianum, commonly called floss flower, is a frost-tender annual of the aster family that provides continuous bloom for beds, gardens or containers from late spring to frost.Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly rounded clusters atop compact, mounded plants generally ranging from 4” to 18” tall. Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly rounded clusters atop compact, mounded plants generally ranging from 4” to 18” tall. F1 Ageratum houstonianum. Cultivation. Hardiness: Annual. Good cultivars include: 'Adriatic', mid-blue flowers.Height 6in (15cm). Plants may not bloom to frost in some hot summer climates, but usually do so in cooler ones. FLOWERS. It grows to approximately 1 m in height. There are two types of shrubs: Straight ; Sprawling ; There are also dwarf species which have adapted to exist indoors. The leaves of the plant are oval at the stem and triangulate out, reaching a length of 1 to 3 inches (2.5 to 7.5 cm). Tolerates light shade, and prefers some light afternoon shade in hot summer climates. Ageratum Houstonianum is a low-growing plant which can reaches up to 0.5 m in height and has multi-colored flowering. A classic annual for any garden, ageratum is a tough plant that can even handle a bit of shade. They are about 18 inches in height with blue flowers. More than 60 cultivars of the blue ageratum flower are available, … A. houstonianum is naturalised in Kenya at 1500-2780m altitude. Height 50cm (20"). Ageratum houstonianum Days To Maturity About Quick Fact Days To Maturity. These are some rugged plants that can withstand tough soil conditions and even deer! An old favorite with its fluffy round clusters, Ageratum houstonianum (Floss Flower) is one of the few annuals to tolerate light shade. Flossflower is the chief common name for Ageratum houstonianum. Ageratum houstonianum a-jer-AY-tum hoos-tone-ee-AY-num Audio There are many cultivars available of this fast-growing annual. Height/Spread: 4 to 36 inches tall, 6 to 18 inches wide. Ageratum houstonianum, a native of Mexico, is among the most commonly planted ageratum varieties. Ageratum houstonianum and Ageratum conyzoides cause liver lesions and are tumorigenic. Exposure: Full sun to part shade. Height/Spread: Compact habit, 6-8 inches tall and wide. They are quite easy to grow, producing a profusion of fluffy flowers all season long. Taller varieties are appropriate for mid-borders or cutting gardens. Ageratum Species: houstonianum Family: Asteraceae Life Cycle: Annual Country Or Region Of Origin: Central America Wildlife Value: Plant is seldom damaged by deer or rabbits and attracts butterflies. The fluffy flowers are lavender-blue, pink, lilac, or white; and spread in small compound umbels. First autumn frost will kill most if not all plants, at which point they may be removed from the garden. There are many types of Ageratum, but Ageratum houstonianum is the most commonly used in both home and display gardens of all kinds. Ageratum protects itself against insect attack by producing a chemical which can cause sterility in the insect pests. Plants tend to wilt quickly if soils are allowed to dry out. Description: Ariella Blue is a quick growing, compact mounding plant that grows to a height and width of 30cm x 30cm. Exposure: Full sun to partial shade. 30cm height . But the common name is seldom used in most circles. Most species are native to Central America and Mexico but four are native to the United States.[3]. Most common ageratums, "Hawaii" for example, are a short 6-8 inches when full grown. in height. The compact, uniform plants bear large, fluffy, powder-blue flowers. Sun and Soil Requirements . Ageratum houstonianum. Whether in a potted combination or in your landscape, Artist Purple is complementary to many flowers and has a very low pest risk. It is an excellent type for mass production. There are two types of shrubs: This article was most recently revised and updated by Melissa Petruzzello, Assistant Editor. The flowers are blue, purple, lilac and cream colors. Aspect. The ordinary Ageratum is a perennial, herbaceous plant or a dwarf, or shrub. Height: 20cm (8"). Gray Herb. They have toothed ovate leaves arranged oppositely along the stem. South facing, west facing . Try growing ageratum in wildlife gardens where they will attract butterflies to their blooms.
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