Hymenocallis × festalis 'Zwanenburg' Bulbs
Hymenocallis × festalis 'Zwanenburg' Bulbs
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.