Dianella Sandwicensis

Description

Dianella Sandwicensis, commonly known as Hawaiian Flax Lily, is a perennial plant that belongs to the Asphodelaceae family. This plant is native to Hawaii and is often used for its ornamental value in landscaping. It has long, narrow leaves that are green on top and bluish-purple underneath. The plant produces small, light blue flowers that grow in clusters and are followed by round, dark blue berries. The berries are edible, but not commonly consumed.

Taxonomic Information

Appearance

Hawaiian Flax Lily grows up to 3 feet tall and 3 feet wide. Its leaves are long and narrow, measuring up to 1 inch wide and 2 feet long. The leaves are green on top and bluish-purple underneath, giving the plant a unique appearance. The plant produces small, light blue flowers that grow in clusters and bloom from late spring to early summer. The flowers are followed by round, dark blue berries that are about ½ inch in diameter.

Care Guide

Water

Dianella Sandwicensis needs regular watering to thrive. The soil should be kept moist, but not waterlogged. During the summer months, the plant may need to be watered more frequently to prevent the soil from drying out.

Fertilization

This plant does not require a lot of fertilizer, but it can benefit from a light application of balanced fertilizer in the spring. Be sure to follow the manufacturer’s instructions for the best results.

Soil

Hawaiian Flax Lily prefers well-draining soil that is rich in organic matter. The soil should be slightly acidic, with a pH between 5.5 and 6.5.

Sunlight

This plant prefers partial shade to full sun. It can tolerate some shade, but too much shade can cause the plant to become leggy and weak.

Hardiness Zones

Dianella Sandwicensis is hardy in USDA zones 9 to 11. It can tolerate temperatures as low as 25°F, but may suffer damage if exposed to prolonged freezing temperatures.

Common Pests & Diseases

Hawaiian Flax Lily is relatively pest and disease-resistant. However, it can be susceptible to root rot if the soil is too wet. It can also be attacked by spider mites and mealybugs. Regular inspection and treatment with insecticidal soap or horticultural oil can help control these pests.

Habitat

Dianella Sandwicensis is native to Hawaii, where it grows in a variety of habitats, including coastal areas, dry forests, and mesic forests. It is often used in landscaping as a ground cover or border plant.

Question and Answer

Q: Is Dianella Sandwicensis toxic to pets?

A: According to the ASPCA, Dianella Sandwicensis is not toxic to cats, dogs, or horses.

Q: Can Dianella Sandwicensis be grown in containers?

A: Yes, Hawaiian Flax Lily can be grown in containers as long as the container is large enough to accommodate the plant’s root system.

Q: Does Dianella Sandwicensis attract pollinators?

A: Yes, the plant’s flowers are attractive to bees, butterflies, and other pollinators.

Q: How often should I prune Dianella Sandwicensis?

A: Pruning is not necessary for this plant, but it can benefit from occasional deadheading to promote new growth.

Related Plants

• Dianella Caerulea
• Dianella Tasmanica
• Dianella Revoluta

References

• “Dianella Sandwicensis”. Floridata.
• “Hawaiian Flax Lily”. University of Florida IFAS Extension.
• “Dianella Sandwicensis”. Pacific Island Ecosystems at Risk (PIER).
• “Dianella Sandwicensis”. Missouri Botanical Garden.