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

Polygonum equisetiforme is a perennial herbaceous plant known for its slender, jointed stems and small, linear leaves, resembling horsetail.

Horsetail Knotweed

Horsetail Knotweed

Polygonum Equisetiforme

Polygonum equisetiforme is a perennial herbaceous plant known for its slender, jointed stems and small, linear leaves, resembling horsetail.

Quick Facts

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

Safety

🐕
Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

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

Care Calendar

Monthly care tasks for Horsetail 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

Horsetail Knotweed
Horsetail Knotweed detail

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Taxonomy

Family:Polygonaceae
Genus:Polygonum