Common Knotweed (Polygonum Plebeium) is a annual or perennial herb in the Polygonaceae family with easy care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 8-11. This plant is safe for cats and dogs.

Polygonum plebeium is a prostrate, mat-forming annual or perennial herb with reddish-brown stems and small elliptic to oblong leaves.

Common Knotweed

Common Knotweed

Polygonum Plebeium

Polygonum plebeium is a prostrate, mat-forming annual or perennial herb with reddish-brown stems and small elliptic to oblong leaves.

Quick Facts

Type
herb
Lifecycle
annual or perennial
Care Difficulty
Easy
Water Needs
Moderate
Light
Full Sun, Partial Shade
Hardiness Zones
8-11

Safety

🐕
Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

Soil Types:loamy, sandy, clay
Indoor:No
Outdoor:Yes
Garden Use:groundcover, erosion control

Care Calendar

Monthly care tasks for Common Knotweed

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Common Knotweed
Common Knotweed detail

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Taxonomy

Family:Polygonaceae
Genus:Polygonum