Does it need a lot of water?

No, it is highly drought tolerant once established and prefers well-draining soil.

Simply remove the spent flower stalks after blooming and trim away any dead or damaged lower leaves.

Plant guide

Spineless Yucca.

Yucca filamentosa

Pronounced YUK-uh fil-uh-men-TOH-suh

Also known as Adam's Needle, Adam's-needle, Bear Grass, Needle-palm, Silk-grass, Spoon-leaf Yucca, bear-grass, curry-leaved yucca

common yucca — Photo by Conway Hawn (CC BY) via iNaturalist

This hardy, architectural plant is a fantastic choice for adding a bold, structural element to your garden. It thrives in sunny spots and is remarkably resilient once established. You'll love its dramatic, tall flower spikes that emerge in the summer.

At a glance

Care level: Easy
Plant type: Evergreen shrub
Light: Full sun
Indoor light: direct
Water: Every 14 to 30 days
Mature size: 120 to 240 cm
Growth rate: medium
Hardiness: USDA 5 to 10
Bloom time: Early to mid summer

Care

Plant this yucca in well draining soil to prevent root rot, as it prefers to dry out between waterings. Keep an eye out for leaf spot or scale insects, though it is generally quite tough. Ensure it gets plenty of sun to encourage those beautiful blooms.

Watering: Allow the soil to dry out completely between waterings to avoid root issues.
Feeding: Apply a balanced, slow release fertilizer once in early spring.
Pruning: Remove spent flower stalks and any damaged or dead leaves in late autumn.
Repotting: Repot only when the plant becomes root bound, using a heavy pot to prevent tipping.
Soil: Sandy, rocky, well-draining
Soil pH: Acidic to neutral
Temperature: -20 to 35°C
Humidity: 20 to 50%
Drought tolerance: high
Lifespan: Perennial, typically 10 to 20 years.
Fragrance: light
Deer and rabbits: high

Signs it needs repotting

Roots growing out of the drainage holes.
The plant becoming top-heavy and unstable in the pot.
Water sitting on the surface of the soil for too long.

Safety

People: The leaves contain saponins which are toxic if eaten and can cause skin irritation upon contact.
Pets: This plant contains saponins which can cause digestive upset if ingested by cats or dogs.
Children: The stiff, needle-like leaf tips pose a significant puncture hazard to small children and should be kept away from play areas.
Contact allergens: The sharp, fibrous leaf tips can cause mechanical skin irritation, and the sap may cause dermatitis in sensitive individuals.
Airborne allergens: The pollen is not typically considered a major airborne allergen.
Edibility: While the flowers and flower stalks are edible when cooked, the leaves contain saponins that can cause severe gastrointestinal distress if ingested.

How to identify it

Sword shaped, stiff, evergreen leaves
White, thread like filaments on leaf margins
Tall, central panicle of bell shaped flowers
Basal rosette growth habit

Height: 0.6 to 2.4m
Spread: 0.6 to 0.9m
Leaves: blue-green, green, evergreen
Flowers: white, cream, 5 to 8cm

Common problems

Yucca plant bug — These small insects cause yellow spotting on the leaves by feeding on the plant tissue.
Leaf spot — Fungal infections can cause dark lesions on the foliage during periods of high humidity.

Growing it

Propagation: division, seed, cuttings
When to plant: spring, autumn
Overwintering: Leave the foliage intact through the winter to protect the crown, as it is evergreen in many climates. Simply clear away any debris that collects in the center of the plant during spring.
In containers: It grows well in large containers with excellent drainage, but ensure the pot is heavy enough to prevent tipping over as the plant matures.

Division

1. Carefully dig up the offsets or pups that grow around the base of the parent plant.
2. Use a sharp, clean spade to sever the connection to the main root system.
3. Replant the offsets immediately in a sunny spot with well-draining soil.

Pair this plant with other drought-tolerant species that thrive in poor, sandy soils to ensure they all stay healthy together.

Grows well with

Purple Coneflower — It shares a love for full sun and dry conditions while providing a nice color contrast.
Blue Fescue — The fine texture of the grass complements the bold, architectural foliage of the yucca.
Sedum — These low-growing succulents provide a great groundcover that matches the yucca's water needs.

Keep away from

Hosta — Hostas require much more shade and moisture than the sun-loving, drought-tolerant yucca.

Similar species

Red Yucca — It has a similar growth habit but produces striking coral-red flowers instead of white ones.

Science

Family: Asparagaceae
Genus: Yucca
Order: Asparagales
Class: Liliopsida
Native range: Southeastern United States.
Conservation: This species is secure throughout its native range and is not currently of conservation concern.

It thrives in dry, sandy, or rocky soils where its deep root system allows it to survive extended dry spells.

Value to wildlife: specialized moth pollinator, nesting material
Pollinators: moths
Uses: xeriscaping, architectural accent, pollinator garden

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 4/9
Soil reaction: 6/9
Light: 8/9
Temperature: 5/9
Moisture: 2/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need a lot of water?: No, it is highly drought tolerant once established and prefers well-draining soil.
How do I prune it?: Simply remove the spent flower stalks after blooming and trim away any dead or damaged lower leaves.

Where the name comes from

The genus name Yucca was mistakenly applied by Linnaeus, while the species name filamentosa refers to the curly, thread-like filaments that peel from the leaf margins.

Good to know

The common name Adam's needle refers to the sharp, spine-tipped leaves.
Native Americans historically used the tough leaf fibers to make cordage and baskets.
The plant produces tall, dramatic spikes of white, bell-shaped flowers in summer.

Is your spineless yucca looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.