Mountain Flax (Phormium Cookianum) is a perennial herb in the Asphodelaceae family with moderate 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. It can be grown indoors.

Phormium cookianum is a perennial herbaceous plant native to New Zealand, known for its arching, broad, drooping green leaves and yellow to red flowers.

Mountain Flax

Mountain Flax

Phormium Cookianum

Phormium cookianum is a perennial herbaceous plant native to New Zealand, known for its arching, broad, drooping green leaves and yellow to red flowers.

Quick Facts

Type
herb
Lifecycle
perennial
Care Difficulty
Moderate
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, gravelly
Indoor:Yes
Outdoor:Yes
Garden Use:specimen, groundcover, erosion control

Care Calendar

Monthly care tasks for Mountain Flax

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

Mountain Flax
Mountain Flax detail

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Taxonomy

Family:Asphodelaceae
Genus:Phormium