6x Ismene 'Zwanenburg' white

Hymenocallis 'Zwanenburg'

6x Ismene 'Zwanenburg' white

Hymenocallis 'Zwanenburg'
White & sweet
Sweet white trumpets. That's how we would describe the Ismene 'Zwanenburg'. Each flower stem can grow as many as 2–5 fragrant flowers. You can plant the 'Zwanenburg' in open ground for a touch of white in your garden. The tubers also thrive in balcony planters. Plant the tubers in the spring. The flowers bloom in the summer.
Space the tubers out when planting. The distance between plants is three times the width of the tuber. Plant the tuber the depth of three times the tuber's height. Plant the tubers in the sun. Water the tuber immediately after planting. Then the soil should be kept slightly damp. The flower bulbs come in organic packaging. 100% degradable and contributes to a healthy and sustainable lifestyle.
A colourful summer!
All our flower bulbs have the A quality mark of the Holland Selection and come with a 100% guarantee that they will grow and bloom. You can be certain that the flower bulbs will grow.
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6x Ismene 'Zwanenburg' white
6x Ismene 'Zwanenburg' white
6x Ismene 'Zwanenburg' white
6x Ismene 'Zwanenburg' white
6x Ismene 'Zwanenburg' white
6x Ismene 'Zwanenburg' white
How we measure

We measure the diameter of the bulb. A bigger bulb contains more food for longer flowering and a stronger plant.

Latin name: Hymenocallis 'Zwanenburg'
Delivery type: Supplied as bulb or tuber
Guarantee: 1 year growth and flowering guarantee
Color: White
Preferred location: Sun, Half shadow
Green stayer: No
Leafs all year: No
Hardy plants: Yes
Self polinating: No
Edible: No
Naturalizing: Yes
Scented: Deliciously Scented
Grafted: No
Cutting flowers: Yes
Flowering: June - August
Growing Height: 30 - 40 cm
Planting distance: 15 cm
Planting depth: 5 - 8 cm
Bulb circumference: 16 cm

You can plant the Ismene bulbs immediately after receiving them in either the ground or in a pot. Beware of night frosts. When planting the bulbs, make sure that the depth of the hole is twice as large as the height of the bulb. A 5 cm bulb needs to be planted in a 10 cm hole. The spacing of the Hymenocallis is approximately 20 cm. Plant the bulbs in good, well-drained soil, with the point upwards and roots down, then refill the hole with soil. You can plant them individually or in small groups.

Ismene in a flower pot or planter

The Hymenocallis festalis grows best in a flower pot or planter in a warm, sheltered area. Just three bulbs in a pot will produce a remarkable result. Place the pot with the Hymenocallis festalis ‘Zwanenburg’ next to a bird of paradise (Strelitzia Reginae) for an exotic atmosphere on your patio.


Water your Hymenocallis festalis 'Zwanenburg' regularly to prevent the soil around the bulbs from drying out. Removing faded flowers will encourage flowering. For an extra rich flowering of 'Zwanenburg' we recommend regularly adding plant food to the water during the summer.

Overwintering Hymenocallis

The bulbs of Hymenocallis festalis 'Zwanenburg' are not hardy, but they are fairly easy to overwinter. Move the pot to a frost-free area for winter protection. Reduce watering, try and keep the compost moist. Increase watering in the spring and you will soon be seeing young leaves shooting. You can now water regularly, adding plant food to the water. Gradually let Ismene get used to the outdoors again and when there are no more night frosts, Zwanenburg 'Festalis Hymenocallis can be brought outdoors onto your patio or decking.


In addition to its name Ismene is also called the 'Spider Lily' due to the particular quirky shape of its flowers. The exotic flowers are something special similar to the flowers of orchids and daffodils.


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