Fernald's iris (Iris fernaldii)

Also known as: Fernald's iris

The plant you're thinking of is *Yucca whipplei*, commonly known as Our Lord's Candle. This species is native to the coastal regions of California and thrives in chaparral and coastal sage scrub habitats. Historically, Native American tribes, such as the Cahuilla, utilized its strong fibers to craft rope and fishing nets. Today, *Yucca whipplei* is also grown by specialty plant nurseries.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Fernald's iris

Lifespan

Perennial

Plant Type

Herb

Plant Height

30 cm

Spread

50 cm to 1 m

Leaf Color

Green

Flower Size

5 cm to 8 cm

Flower Color

White Yellow Purple

Images of Fernald's iris

Quickly Identify Fernald's iris

Identifying Iris fernaldii involves looking for its distinctive yellow-green flowers with purple veins, which appear in spring. The plant typically has narrow, grass-like leaves and stands about 6-12 inches tall.

Scientific Classification of Fernald's iris

Phylum

Vascular plants

Class

Monocotyledons

Order

Asparagales

Family

Iris

Genus

Irises

Species

Fernald's iris

Planting and Growing of Fernald's iris

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-8 hours

Ideal Temperature

60-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Fernald's iris?

Iris fernaldii requires a careful approach to watering. Ensure the soil is consistently moist, but not waterlogged. Water with approximately 500ml each time, allowing excess water to drain freely, ensuring the roots get adequate moisture without sitting in standing water.

What are the symptoms of an underwatered Fernald's iris? ›

What should I do if my Fernald's iris is not getting enough water? ›

What are the symptoms of an overwatered Fernald's iris? ›

How to save an overwatered Fernald's iris? ›

What Are the Sunlight Requirements for Fernald's iris?

Sunlight Requirements: Partial sun, Full sun

Duration of light: 6 to 8 hours

Partial sun to full sun exposure optimally supports Iris fernaldii by balancing photosynthesis and hydration. This range ensures sufficient energy production for vibrant flower displays and healthy foliage development, fostering a strong growth cycle each season.

What is the best location for Iris fernaldii? ›

How can I adjust the lighting conditions if necessary? ›

What benefits does Iris fernaldii receive from ideal lighting? ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Fernald's iris?

Ideal Temperature: 60 ~ 75℉

Iris fernaldii thrives best in temperatures ranging from 60°F to 75°F. Within this range, the plant can efficiently carry out photosynthesis, maximize nutrient absorption, and maintain robust growth. It is recommended to keep the plant out of direct cold drafts or hot air vents to maintain this range consistently.

What Soil is Best for Fernald's iris?

Soil type: Sandy soil, Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Iris fernaldii thrives in soil that offers excellent drainage. This minimizes the risk of root rot, ensuring the plant gets enough oxygen and nutrients without waterlogging its roots. This iris prefers nutrient-rich soils that provide essential minerals for optimum growth. Fertile soil ensures vibrant blooms and healthy foliar development. Soil with moderate moisture retention supports Iris fernaldii by maintaining adequate moisture around the roots while preventing excessive dryness or wetness.

How to Fertilize Fernald's iris?

Fertilizer type: Balanced

For Iris fernaldii, use a balanced fertilizer with a mild concentration. Liquid formulations should be diluted to half the concentration recommended for typical garden plants to prevent root burn. Use one tablespoon of diluted liquid fertilizer per gallon of water.

How to Prune Fernald's iris?

Pruning Time: Spring, Summer

Start by examining the Iris fernaldii plant for any brown or wilted leaves. Gently remove these leaves as close to the base as possible to promote new growth and cleanliness. Once the plant has finished its blooming season, usually by late Spring, trim back the flower stalks. Cut them down to just above ground level to prevent seed production and redirect energy back to the bulb for next year. If your Iris fernaldii appears too dense, it might be time to divide the clumps. Using a sharp spade, split the plant into smaller sections and replant them. This process should typically be done in late Summer. More About Pruning Techniques→

How to Propagate Fernald's iris plant?

Propagate Time: Early spring, Late spring

Collect seeds from mature Iris fernaldii plants in the late summer. Allow them to dry thoroughly, and then store them in a cool, dry place until early spring. Before planting, soak the seeds in water for 24 hours to encourage germination.

Prepare a well-draining soil mixture composed of loam, sand, and organic matter. This ensures the seeds and divisions receive ample nutrients and prevents water logging, which can cause root rot.

In early spring, sow seeds in prepared soil or plant divided rhizomes. Seeds should be planted about half an inch deep. Divided rhizomes should be planted with the top just below the soil surface to promote healthy growth.

How to Repot Fernald's iris plant?

Repotting frequency: Every 2-3 years

Repot Iris fernaldii when you notice its roots starting to circle the pot or emerging through drainage holes. Additionally, if the soil depletes of nutrients or becomes compacted, it's a sign that repotting is necessary.

Choose a pot slightly larger than the current one, preferably with drainage holes. The extra space allows the roots room to expand, promoting healthier growth and helping prevent root rot by ensuring proper drainage.

Opt for a well-draining sandy loam that mimics the plant’s natural habitat. This type of soil prevents waterlogging, decreases the risk of root diseases, and supports nutrient uptake effectively for robust plant health.

Toxicity

Ingestion

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.