Desert spoon

Sun

Full sun; light shade is tolerated, but growth is less compact.

Water

Low once established. Water young plants deeply, then let the soil dry before watering again; established plants usually need supplementary water only during prolonged drought.

Soil

Sharply drained sandy, gravelly or rocky soil. Tolerates poor and alkaline soil; avoid clay that stays wet, especially in winter.

Height

3-5 ft (0.9-1.5 m) in leaf, eventually taller on old plants; flower spikes reach 10-15 ft (3-4.6 m)

Spread

4-6 ft (1.2-1.8 m)

Flowers

Late spring to summer: tall, narrow spikes of small creamy-white flowers on mature plants, often with several years between flowering.

Foliage

Evergreen. Dense rosettes of long, narrow, blue-grey leaves with sharp hooked teeth along their edges and frayed tips.

Growth

Slow, especially in cool climates.

Care needed

Low

• Plant with the crown above the surrounding soil level; use a raised mound where drainage is doubtful.
• Water deeply during establishment, allowing the root zone to dry between waterings.
• Use gravel mulch and keep it clear of the crown; avoid moisture-holding mulch against the plant.
• Do not routinely feed plants in the ground; excessive feeding encourages softer growth.
• In cool, wet climates, use a container that can be moved to a bright, frost-protected place with shelter from winter rain.

Pruning. In spring, remove only dead or damaged lower leaves, wearing thick gloves, long sleeves and eye protection. Cut spent flower stalks near their base once dry; do not cut back the growing crown.

Spring

Check for winter damage and remove dead leaves without injuring the central crown.

Late spring

Plant or repot once hard frosts have passed, using a sharply drained soil mix.

Summer

Check new plants during dry spells and water deeply only when the soil has dried.

Late summer

Remove dry flower stalks if you do not want to keep them for their shape or seed.

Autumn

Reduce container watering and arrange shelter from persistent winter rain.

Winter

Keep sheltered container plants barely moist and check that outdoor drainage remains clear.

• Use as a single architectural specimen in gravel, allowing room for its full leaf spread.
• Repeat rounded plants beside angular walls or paving for a strong contrast of shapes.
• Combine with low drought-tolerant perennials and grasses in a dry border.
• Grow in a large, frost-resistant container in a sunny courtyard, away from seating and circulation routes.

Garden styles it suits: Desert modern, Architectural minimal, Desert / xeriscape, Dry gravel garden, Southwestern and Modern Mediterranean.

Plant it with: Red yucca, Blue grama, Parry's agave, Lavender, Rock rose and Autumn sage.

Wildlife: Flowers provide pollen and nectar for bees and other insects. Male and female flowers occur on separate plants, so seed production requires both.

• Root or crown rot in wet soil: improve drainage, stop unnecessary watering and keep water out of the crown; badly rotted plants may not recover.
• Cold damage, especially during wet winters: choose a sheltered position and protect container plants from prolonged freezing and rain.
• Scale insects: inspect leaf bases and remove small infestations by hand; use a labelled horticultural oil if needed, avoiding hot sunshine.
• Leaf scorch after moving a sheltered plant into strong sun: acclimatise it gradually over several weeks.

Not known to be toxic to people, cats, dogs or horses, although species-specific safety information is limited. The sharp leaf-edge teeth can cut skin and injure eyes or mouths; keep the foliage away from children, pets and grazing animals.

• Mexican grass tree (Dasylirion longissimum)

  Has much narrower, green, nearly cylindrical leaves without the prominent hooked edge teeth of desert spoon.

• Beaked yucca (Yucca rostrata)

  Also forms a blue-grey rounded head, but its leaves have much finer edge teeth and a pointed terminal spine rather than desert spoon's frayed tips.

• Century plant (Agave americana)

  Has broad, thick, fleshy leaves with strong terminal spines, rather than numerous narrow, flexible leaves.

The common name desert spoon refers to the broad, spoon-shaped base of each leaf.

Propagation. Grow from seed in a warm, freely draining medium. Seedlings grow slowly; division is not a routine method because plants usually form a single main crown.

Accepted botanical name

Dasylirion wheeleri

In the US and Canada

Native in the lower 48 states.

Native range

Arizona, Mexico Northeast, Mexico Northwest, New Mexico and Texas.

Measured

Soil pH 6.6 to 9. Average height 457 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.