New Zealand flax

Phormium ‘Guardsman’

Description

Many cultivars of flax are available from nurseries and garden centers. One cultivar, P. ‘Guardsman’ is a large growing selection that provides vivid red and maroon foliage color. It can grow 4-6 ft. tall and slowly form large clumps. As with other New Zealand flax cultivars, it is best to avoid placement within hot and sunny summer exposures to minimize leaf burning.

Plant Type: Perennial
Foliage Character: Evergreen
Habit: Upright, Robust, Clumping, Arching
Growth Rate: Moderate
Foliage Color: Burgundy, Red
Flower Color: Burgundy
Flower Season: Summer, Fall
Soil Adaptations: Loam, Clay
Exposure Adaptations: Morning sun, Heat, Aridity, All day sun
Function: Civic spaces, Borders, Banks, Raised planters, Parks and open space, Near pools and water features, Mass planting, Foundations, Foliage accent plant, Container plant
Height: 5 ft. – 7 ft.
Width: 4 ft. – 5 ft.

Watering Schedule: Medium

For most situations, we recommend watering once per week after establishment, watering very deeply in summer, less deeply in fall and spring, and even less in winter.

See our recommendations for how much water to apply each time you water, below. Note that these recommendations are intended for inland valley areas of Southern California including the Inland Empire, San Gabriel, and San Fernando Valleys. People in cooler or warmer areas may use this as a baseline but should adjust based on local needs.

Learn how to provide 1” of water to your landscape here, and adjust to provide more or less based on the recommendations above for each time of year.

Seasonal Watering Recommendations

June – August: once per week, water deeply, applying approximately 1.25” of irrigation.
September – October: once per week, water deeply, applying approximately 0.75” of irrigation.
November – February: once per week, water deeply, applying approximately 0.5” of irrigation.
March-May: once per week, water deeply, applying approximately 0.75” of irrigation.

Learn how to provide 1” of water to your landscape here, and adjust to provide more or less based on the recommendations above for each time of year.

Adjusting to your local needs

These recommendations for Medium / Moderate water demanding plants were created for Southern California inland valley areas. Southern California areas closer to the coast and along the coast will usually be able to water significantly less during the warm months of the year. For desert areas, check with local experts to be sure plants are appropriate for the area and anticipate needing to water more.

As a very general baseline, people in Los Angeles and similar areas can try setting a schedule of 80% of the in Spring, Summer, and Fall and adjust as necessary based on observation. The difference is less pronounced in the winter months, so we recommend starting with the same recommendations as above for winter. People in cooler coastal areas such as Santa Monica can try using this same approach but adjust to use 75% of the chart recommended minutes for the Spring, Summer, and Fall months.

Important Notes

These are general guidelines. Always observe and adjust as necessary for your landscape.
If it rains over 1” you will likely not need to water for at least another week, possibly longer. Before watering again, check the soil. It should be significantly dry at least 4” below the soil surface before watering again.
It is important to group plants with the same water needs together in the landscape to avoid needing to over or under water plants when running your irrigation system.
“Smart timers” or weather sensitive irrigation controllers such as Rachio and Hunter Hydrawise are ideal for watering plants in this category because they will automatically adjust how much they water based on the weather so you do not need to reprogram the timer seasonally. Rebates for these types of irrigation controllers are available through socalwatersmart.com.

New Zealand Flax is generally a lower maintenance plant in coastal areas but takes far more work to keep looking good inland. If growing, try to plant somewhere with afternoon shade or light overhead shade because leaves and leaf tips often burn in full direct sun in inland gardens during the summer. If this happens, significantly burnt leaves should be removed to the base and tip burnt leaves can be trimmed to clean up. When trimming strapped leaf plants including New Zealand Flax, make your cuts at a diagonal angle. This will keep a more natural look. Horizontal cuts across the leaf look funny (D, S). Remove dead leaves any time of the year as needed, and cut out spent flower stalks (5). References

New Zealand flax

Description

Watering Schedule: Medium

Seasonal Watering Recommendations

Adjusting to your local needs

Important Notes

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