Photo by Melody

PlantFiles: Purple Loosestrife
Lythrum virgatum 'Morden Gleam'

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Family: Lythraceae (ly-THRAY-see-ee) (Info)
Genus: Lythrum (LY-thrum) (Info)
Species: virgatum (vir-GA-tum) (Info)
Cultivar: Morden Gleam
Additional cultivar information: (aka Morden's Gleam)

One member has or wants this plant for trade.

Category:
Perennials

Height:
36-48 in. (90-120 cm)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
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)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Magenta (Pink-Purple)

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Profile:

1 positive
1 neutral
2 negatives

Gardeners' Notes:

RatingAuthorContent
Positive auriculalady On Aug 8, 2011, auriculalady from Hoquiam, WA wrote:

I grew a Lythrum hybrid in Minnesota. It was not the least bit misbehaved. When I dug it up, it did not regrow from bits of root left in the soil. To this day I consider it an irreplaceable perennial in the garden. The invasion by Lythrum on the Minnesota river did not happen overnight. If you ignore a problem plant for fifty years, it is going to run amok. Some gardener planted it directly on the riverbanks. I don't know of any lakes overrun with it in Minnesota, so apparently birds don't carry the seed significantly.










Negative susybell On Oct 23, 2007, susybell from Vancouver, WA (Zone 8a) wrote:

FYI-
Lythrum Quarantine
WAC 16-752-400 - 415
purple loosestrife Lythrum salicaria
wand loosestrife Lythrum virgatum
It is prohibited to transport, buy, sell, offer for sale or to distribute plants, plant parts or seeds of Lythrum salicaria or L. virgatum into or within the state of Washington. It is also prohibited to transplant wildplants and/or plant parts of these species in the state of Washington.
The Lythrum quarantine applies to all Lythrum species including any hybrid cross and all named cultivars, including but not limited to plants with the horticultural names: morden pink, morden gleam, morden rose, the beacon, fire candle, brightness, lady sackville, Mr. Robert, Roberts happy, roseum superbum, purple spire, rose queen, the rocket, dropmore purple and tomentosum.

Negative RubyStar On Jun 16, 2003, RubyStar from Madison, WI (Zone 5a) wrote:

Lythrum salicaria, L. virgatum, and all of their hybrids are responsible for a devastating amount of damage to North American wetlands. As stated above, even self-fertile hybrids can contribute hugely to the problem, by pollinating wild-growing stands.

Neutral Terry On Jan 19, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:

This species is considered self-fertile. However, research has shown that sterility occurs only when no wild species are growing in the vicinity.

According to Armitage, when 'Morden Pink' or 'Morden Gleam' was planted near wild Lythrum salicaria the resulting seed was over 80% viable.

Regional...

This plant has been said to grow in the following regions:

Cincinnati, Ohio
Richmond, Virginia



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