Flossflower Seeds (Ageratum houstonianum)

€2.35

Flossflower Seeds (Ageratum houstonianum)

Price for Package of 2000+ seeds (0,3g).

Ageratum houstonianum, commonly known as flossflower, bluemink, blueweed, pussy foot or Mexican paintbrush, is a cool-season annual plant often grown as bedding in gardens.

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Flossflower Seeds (Ageratum houstonianum)

Price for Package of 2000+ seeds (0,3g).

Ageratum houstonianum, commonly known as flossflower, bluemink, blueweed, pussy foot or Mexican paintbrush, is a cool-season annual plant often grown as bedding in gardens.

The ordinary Ageratum is a perennialherbaceous plant or a dwarf, or shrub. The plant grows to 0.3–1 m high, with ovate to triangular leaves 2–7 cm long, and blue flowerheads (sometimes white, pink, or purple). The flower heads are borne in dense corymbs. The ray flowers are threadlike and fluff-haired, leading to the common name. The narrow lanceolate bracts are pointed, denticulate only at the top and glandular hairy. The flowering period is from May to November in the northern hemisphere.

Range

The plant is native to Central America in Guatemala and Belize, and adjacent parts of Mexico, but has become an invasive weed in other areas. It was also naturalized in large parts of the tropics and in the southern United States. Their habitat is pastures, moist forest clearings and bushes up to altitudes of 1000 meters.

Today, it is widely used as an ornamental plant for summer borders and balcony boxes, high varieties also as cut flowers. The species is cultivated once a year, having numerous varieties whose crowns may be dark blue, purple, pink and white. Preferring cool soils and exposure in full sun, high varieties reach stature heights up to 60 centimetres.

Chemistry

Ageratum has evolved a unique method of protecting itself from insects: it produces a methoprene-like compound which interferes with the normal function of the corpus allatum, the organ responsible for secreting juvenile hormone during insect growth and development. This chemical triggers the next molting cycle to prematurely develop adult structures, and can render most insects sterile if ingested in large enough quantities.

Toxicity

Ageratum houstonianum is toxic to grazing animals, causing liver lesions. It contains pyrrolizidine alkaloids.

Weed risk

Ageratum houstonianum is prone to becoming a rampant environmental weed when grown outside of its natural range. It has become an invasive weed in the United States, Australia, Europe, Africa, China, Japan, New Zealand, and the Philippines.

Germination 10-14 days at 72 to 75ºF (22 to 24ºC).

Keep media moist and near saturation by watering before placement of seed.

Press the seed lightly in soil and cover lightly, as the seed does not need light for germination.

Once seedlings emerge grow on with less moisture in cooler conditions.

Transplant to trays when large enough to handle and grow on in cooler conditions.

Gradually acclimatise outside when all danger of frost has passed.

This species does not appreciate feeding until mature and flowering.

F 11
1576 Items

USDA Hardiness zone

The number of seeds in the package and grams?

Note that wherever the number of seeds is indicated in grams, there may be more or fewer seeds in the package because the seeds are not the same size and weight.

If indicated in grams, the number of seeds loses relevance and is only there to show the approximate number of seeds in the package.

For example "Price for pack of 50 (1g) seeds." so you are not buying the number of seeds but the weight.

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