Houndstongue (Cynoglossum Officinale) is a biennial herb in the Boraginaceae family with easy care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 3-8. This plant is toxic to cats and dogs — keep it out of reach of pets.

Cynoglossum officinale, commonly known as houndstongue, is a biennial or short-lived perennial herb native to Europe and Asia, now naturalized in North America.

Houndstongue

Houndstongue

Cynoglossum Officinale

Cynoglossum officinale, commonly known as houndstongue, is a biennial or short-lived perennial herb native to Europe and Asia, now naturalized in North America.

Quick Facts

Type
herb
Lifecycle
biennial
Care Difficulty
Easy
Water Needs
Moderate
Light
Full Sun, Partial Shade
Hardiness Zones
3-8

Safety

⚠️
Not Pet Safe
⚠️
Not Child Safe
☠️
Toxic

Growing Conditions

Soil Types:loamy, sandy, clay
Indoor:No
Outdoor:Yes
Garden Use:wildlife habitat

Care Calendar

Monthly care tasks for Houndstongue

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

Houndstongue
Houndstongue detail

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Taxonomy

Family:Boraginaceae
Genus:Cynoglossum