Mountain geranium

Geranium robertianum

Geranium

Geraniaceae

Native Plants

Zone 4–10

🐾 Pet-Safe

🌱 Beginner Friendly

Also known as Herb Robert, this small geranium produces delicate pink flowers and aromatic foliage. Thrives in partial shade with consistent moisture and spreads naturally in suitable conditions. Very easy to grow and self-seeds readily.

Care Requirements

Care Level

Low

Sun

Partial Shade

Water

Moderate

Growth Rate

Moderate

Mature Height

24″ – 60″

Soil

sandy loam

Life Cycle

Perennial

Spacing

8″

Watering Schedule

Every 5-7 Days • Keep Soil Consistently Moist But Not Waterlogged

Soil pH

5.5 – 6.5

Temperature

-30° – 95°F

Mature Spread

up to 16″

Root Depth

Shallow

Foliage

Medium

Propagation: Seed

Ecology & Origin

Native to

Alaska

Albania

Algeria

Altay

Argentina Northeast

Argentina Northwest

Arkansas

Austria

Azores

Baltic States

Belarus

Belgium

Bermuda

Bolivia

Brazil South

Brazil Southeast

British Columbia

Bulgaria

California

Canary Is.

Attracts

🐝 Bees

🐝 Butterflies

Safety & Use

⚕ Medicinal

🐾 Pet-safe

Sources

Data: trefle, usda