Is Harrisia Cactus safe for pets?

Yes, Harrisia Cactus (Harrisia Tetracantha) is considered safe for cats and dogs.

Is Harrisia Cactus easy to care for?

Harrisia Cactus has a medium care difficulty rating. It requires low watering and full_sun light.

Can Harrisia Cactus grow indoors?

Harrisia Cactus is primarily an outdoor plant and may not thrive indoors without specialized conditions.

Harrisia Cactus (Harrisia Tetracantha) is a perennial cactus in the Cactaceae family with moderate care difficulty. It requires low watering and full sun light in USDA hardiness zones 9-11. This plant is safe for cats and dogs.

Harrisia tetracantha is a columnar cactus native to tropical and subtropical South America, known for its spiny stems and large nocturnal flowers.

Last updated: February 2026

Harrisia Cactus

Harrisia Tetracantha

Harrisia tetracantha is a columnar cactus native to tropical and subtropical South America, known for its spiny stems and large nocturnal flowers.

Quick Facts

Type

cactus

Lifecycle

perennial

Care Difficulty

Moderate

Water Needs

Low

Light

Full Sun

Hardiness Zones

9-11

Safety

🐕

Pet Safe

⚠️

Not Child Safe

✅

Non-Toxic

Growing Conditions

Soil Types:sandy, rocky, well-drained

Indoor:No

Outdoor:Yes

Garden Use:ornamental, drought-tolerant landscaping, pollinator attraction

Care Calendar

Monthly care tasks for Harrisia Cactus

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

View leaf details, flowers, seeds & more in the app

Taxonomy

Family:Cactaceae

Genus:Harrisia