Hymenocallis × festalis 'Zwanenburg' is an elegant summer-flowering bulb known for its dramatic white spider-like blooms and sweet fragrance.

The large flowers feature a central trumpet surrounded by long narrow petals that curve outward like delicate tendrils.

Each strong green stem can carry several blooms, creating a striking display in borders or patio containers.

• Height: 50–70cm
• Spread: 30–40cm
• Flower size: 15–20cm across
• Flower colour: pure white
• Flowering time: summer
• Position: full sun or light shade
• Soil: fertile, well-drained soil

About Hymenocallis × festalis 'Zwanenburg'

Hymenocallis × festalis 'Zwanenburg' belongs to the Amaryllis family and is widely known as a spider lily because of its unusual flower shape.

The flowers consist of a central trumpet surrounded by slender arching petals which create the distinctive spider-like form.

Each flowering stem usually carries two to five blooms, each reaching up to 20cm across.

The flowers are also fragrant, releasing a pleasant scent during warm summer weather.

Synonyms include:

• Ismene × festalis 'Zwanenburg'
• Ismene × deflexa 'Zwanenburg'

Benefits for UK Wildlife

Hymenocallis flowers can support visiting insects.

• Fragrant blooms may attract pollinating insects
• Adds diversity to wildlife-friendly summer planting
• Pairs well with other nectar-rich garden plants

Plant alongside other flowering plants to support pollinator activity in summer.

Where to Grow Spider Lily 'Zwanenburg'

• Sunny garden borders
• Patio containers
• Exotic-style planting schemes
• Greenhouse or conservatory displays
• Sheltered garden beds

The exotic flowers are especially effective when planted where they can be viewed up close.

Planting Tips

• Plant bulbs in spring after frost risk has passed.
• Choose a warm, sunny or lightly shaded location.
• Plant bulbs with the neck just above soil level.
• Space bulbs about 30–40cm apart.
• Use fertile soil with good drainage.
• Water regularly during active growth.

In cooler areas, grow in containers so the bulbs can be moved to a frost-free location in winter.

Why Grow Hymenocallis × festalis 'Zwanenburg'

• Large dramatic spider-like flowers
• Sweet summer fragrance
• Exotic appearance for garden planting
• Suitable for borders and patio containers
• Long-lasting blooms

If you want a distinctive summer bulb, Hymenocallis × festalis 'Zwanenburg' brings elegant white flowers and fragrance to sunny garden spaces.