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Hardiness: USDA Zone 2a: to -45.5 °C (-50 °F) USDA Zone 2b: to -42.7 °C (-45 °F) USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color: Pink Violet/Lavender White/Near White
Bloom Time: Mid Summer
Foliage: Herbaceous
Other details: Requires consistently moist soil; do not let dry out between waterings May be a noxious weed or invasive This plant is attractive to bees, butterflies and/or birds
Soil pH requirements: 6.1 to 6.5 (mildly acidic)
Propagation Methods: By dividing the rootball From seed; direct sow outdoors in fall From seed; stratify if sowing indoors
On Jul 21, 2005, fluffygrue from Manchester
(United Kingdom) (Zone 8a) wrote:
Invasive in Manchester, UK. You could keep it under control if you regularly pulled it, but frankly, it's quite an ugly plant for 99% of the year, so I can't see why you'd keep it intentionally. (Unless you truly wanted a wildflower garden thing.)
On Aug 24, 2003, xyris from Sebring, FL (Zone 9b) wrote:
It self-sows in abundance in my garden, and also spreads by long rhizomes, and it could be considered invasive. However, I tend to leave some fireweed as tall background perennials and pull them out where I don't want them. Many of my specimens in western Washington reach 7 to 8 feet tall. If the main flowering stem is pruned back once most of the flowers have finished, then more side shoots will form and flower from the uppermost remaining nodes.
On Aug 11, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:
Fireweed appears from Northern Alaska, the Yukon, and down to California. In Southcentral Alaska, fireweed is a common site in sunnier areas, always one of the first plants to grow in burned woodland areas.
Plants are vigorous here in Southcentral Alaska reaching a height of over 4 feet where conditions suit it. Though the flowers are a pale magenta, some white blooming plants have been found. Pods open in the fall to send off a downy seed.
On Aug 27, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:
This species of Epilobium is commonly known as Fireweed because it is one of the first plants arising from areas that have been burned or bombed.
A pretty wildflower, it can be invasive.
Regional...
This plant has been said to grow in the following regions:
Seward, Alaska Flagstaff, Arizona Saint Helen, Michigan Klamath Falls, Oregon Portland, Oregon Mercer, Pennsylvania Bremerton, Washington Sultan, Washington
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