Spanish dagger
Yucca gloriosa · Asparagaceae
📷 W. Bulach · CC BY-SA 4.0
⚠️ Feuilles et sève contiennent saponines; contact/ingestion provoque irritation muqueuse, troubles digestifs chez enfant/chien/chat.
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around spanish dagger and prepare for winter.
ID card
- Foliage
- Evergreen, lanceolate, rigid and pointed
- Flowering
- June to August, white flowers in upright panicles
- Adult size
- Up to 2 m in height
- Growth
- Slow to moderate
- Hardiness
- Down to −10 °C depending on conditions
- Origin
- Southeastern United States
- Soil type
- Well-drained, light, even poor
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Yucca is a sun junkie and hates water: only water it really during the first year. After that, natural rainfall is enough for it (even in dry regions, it adapts).
The common mistake
Watering regularly or placing it in partial shade: it becomes gray-green, etiolated, and stops flowering.
The pro's trick
Remove old lower leaves to aerate the rosette and limit rot.
Care
Watering
Yucca gloriosa is highly tolerant of drought once established. Water moderately during the growing period (spring-summer), then reduce drastically in autumn and winter. In a pot, let the substrate dry between waterings to prevent root rot.
Light exposure
Place your Yucca in full sun for optimal growth and generous flowering. It tolerates very hot and sunny situations well. In partial shade, the plant will survive but will be less vigorous and flower less abundantly.
Soil and drainage
Use very well-drained, light, even rocky soil. A mixture of coarse potting soil, sand and gravel works perfectly. In a pot, use a specialized substrate for succulents or cacti. Soil that is too rich or moist promotes root diseases.
Pruning and maintenance
No pruning is necessary for plant health. You can remove dead or damaged leaves at the base and eliminate faded flower heads. Basal shoots can be detached for propagation if desired.
Fertilizing
Yucca gloriosa is not a heavy feeder. One application of balanced, low-nitrogen fertilizer once or twice during the growing period is enough. Too much fertilizer encourages soft, less hardy foliage. Skip fertilizing in winter.
Diseases and pests
Root rot remains the main risk, caused by excess moisture. Watch for mealybugs or spider mites in dry climates. Good drainage and adequate air circulation prevent most fungal problems.
Did you know?
Yucca gloriosa is called the 'Spanish Dagger' because of its pointed, sharp leaves. Traditionally, Native American peoples used the fibers from the leaves to make textiles, cordage and baskets. In Europe, it symbolizes exoticism and was introduced as early as the 16th century by travelers returning from the New World.
Where to buy it
Plant in spring, once all risk of frost has gone. Pick a plant with healthy foliage and roots that are not exposed. Best time: from April to June.
Add this plant to my garden →Plants from the same family
- Lily of the valleyConvallaria majalis
- Spiny-headed Mat-rushLomandra longifolia
- Siberian squillScilla siberica
- Century plantAgave americana
- Sea squillDrimia maritima
- Armenian grape hyacinthMuscari armeniacum
Tips generated and checked by Viridia — adapt them to your local climate.