Lythrum salicaria – Purple Loosestrife

Lythrum salicaria - Purple Loosestrife

Planted in triangle bed.

Family: Lythraceae (ly-THRAY-see-ee)
Genus: Lythrum (LY-thrum)
Species: salicaria (sa-lih-KAR-ee-uh)

Category:
Perennials

Height:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing:
4-6 ft. (1.2-1.8 m)

Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)

Sun Exposure:
Full Sun

Bloom Color:
Pink
Magenta (Pink-Purple)

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
May be a noxious weed or invasive
Requires consistently moist soil; do not let dry out between waterings
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Propagation Methods:
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost
From seed; direct sow after last frost
From seed; germinate in a damp paper towel

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

About the Author

David

Is pushing forward with his design of the Karhula gardens. Favorite quote atm 'Rome was not built in a day'