
Grass-poly
Lythrum hyssopifolia
Grass-poly is a delicate annual or short-lived perennial that thrives in moist, open habitats such as pond margins, wet meadows, and damp garden borders. It prefers full sun to partial shade and consistently moist soil, making it ideal for rain gardens or the edges of water features. This modest but charming plant produces small pink to purple flowers and has some historical medicinal use in traditional herbal practices.
Care Level
Moderate
Sun
Partial Sun
Water
Moderate
Growth Rate
Moderate
Mature Height
12″ – 36″
Soil
loam
Life Cycle
Perennial
Spacing
10″
Watering Schedule
Every 5-7 Days; More Frequently In Dry Periods • Keep Soil Consistently Moist But Not Waterlogged; Tolerates Occasional Wet Conditions
Soil pH
5.5 – 6.5
Temperature
-20° – 90°F
Mature Spread
up to 24″
Root Depth
Medium
Foliage
Medium
Propagation: Seed, Division
Native to
Attracts
Sources
Data: trefle, usda
Image: trefle.io — Taken May 14, 2016 by Tela Botanica − Liliane ROUBAUDI (cc-by-sa)
No nurseries currently have this species in stock.