Toothless desert spoon

Sun

Full sun; tolerates light shade in hot climates, but develops its best shape in strong light.

Water

Low once established. Water during establishment and occasionally during prolonged summer drought; keep much drier in winter.

Soil

Sharply drained sandy, gritty or stony soil. Avoid waterlogged clay and sites where winter rain collects.

Height

10-15 ft (3-4.6 m) over many decades, excluding flower stalks; usually much shorter in gardens.

Spread

5-8 ft (1.5-2.4 m)

Flowers

Mature plants flower intermittently in summer, producing tall stalks of small creamy-white flowers above the leaves.

Foliage

Evergreen. Long, very narrow green leaves radiate in all directions. They are roughly square in cross-section and lack the hooked marginal teeth found on many other desert spoons, although their tips can still be sharp.

Growth

Slow, especially when young or grown in containers.

Care needed

Low

• Pollinators
• Deer resistant
• Drought tolerant
• Heat tolerant
• Low allergen

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Moderate

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1.6 ft (0.5 m)

2. After 1 year

   3 ft (0.91 m)

3. After 2 years

   4 ft (1.3 m)

4. After 3 years

   6 ft (1.7 m)

5. After 5 years

   8 ft (2.6 m)

About 8 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Growth rate

Slow

• Plant in spring after frost, setting the crown at its original soil level.
• Water deeply during establishment, then let the soil dry before watering again.
• Use a raised bed or mound where drainage is doubtful; do not rely on gravel in the planting hole.
• Keep mulch away from the crown and trunk; a shallow gravel mulch suits dry sites.
• Feed sparingly in spring only if growth is weak or the plant is container-grown.
• In colder climates, grow in a freely draining container and overwinter somewhere bright, frost-free and relatively dry.

Pruning. In late spring, remove fully dead leaves close to their bases with clean secateurs, wearing gloves and eye protection. Leave green leaves and the central growing point intact; remove spent flower stalks when dry.

Spring

Plant or repot after frost risk has passed, using a sharply drained growing medium.

Late spring

Remove dead leaves and check that mulch has not accumulated against the crown.

Summer

Water establishing plants deeply, allowing the soil to dry between waterings.

Late summer

Remove dry flower stalks if accessible; do not cut into the leafy crown.

Autumn

Reduce watering as growth slows and move containers under cover before damaging frost.

Winter

Keep sheltered plants bright and relatively dry, and check outdoor plants for standing water around their roots.

• Use as a single focal plant in a gravel courtyard, with space for its mature leaf spread.
• Repeat widely spaced specimens along a sunny wall to create a strong architectural rhythm.
• Combine with low succulents and silver-leaved shrubs for contrasting shapes in a dry border.
• Grow in a large, stable container on a sunny terrace where winter shelter is available.

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

Plant it with: Red yucca, Whale's tongue agave, Lavender, Santolina, Upright stonecrop and Blue fescue.

Wildlife: The flowers attract bees and other flower-visiting insects. Flowering is irregular, so it is not a dependable annual source of nectar.

• Root or crown rot in wet soil: improve drainage, keep the crown clear and reduce watering, especially in cool weather.
• Frost damage to leaves or the growing point: choose a sheltered site and protect young plants during cold spells; overwinter containers under cover outside its reliable range.
• Scale insects on leaves or sheltered leaf bases: inspect regularly, remove small infestations by hand and use a labelled treatment if needed.
• Mealybugs on container plants: isolate affected plants, remove visible insects and treat persistent infestations with a product labelled for ornamental plants.

Not known to be toxic to people, cats, dogs or horses, although species-specific safety information is limited. No part is established as poisonous; the main household hazard is physical injury from the stiff leaf tips. Avoid planting beside narrow paths or play areas.

• Blue desert spoon (Dasylirion wheeleri)

  Has broader, flatter, usually blue-grey leaves with conspicuous hooked teeth along their edges.

• Green desert spoon (Dasylirion serratifolium)

  Has flatter, broader leaves with toothed margins and often conspicuous frayed fibres at the tips.

• Ponytail palm (Beaucarnea recurvata)

  Has a conspicuously swollen trunk base and flat, softer leaves that droop in long ribbons rather than forming a stiff, rounded fountain.

The epithet quadrangulatum refers to the roughly four-sided leaves, while 'toothless' describes their lack of marginal spines.

Propagation. Usually grown from seed sown in warmth in a freely draining medium. Seedlings grow slowly; division is generally unsuitable because plants usually form a single trunk.

Accepted botanical name

Dasylirion quadrangulatum

Native range

Mexico Northeast.

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