Peruvian Daffodil 'Zwanenburg'

Hymenocallisfestalis

Family
Amaryllidaceae (am-uh-ril-id-AY-see-ee)
Genus
Hymenocallis (hy-men-oh-KAL-is)
Species
festalis (FES-tuh-liss)
Synonym
Ismene festalis
Sun Exposure
Full Sun
Foliage
Evergreen
Smooth
Textured
Height
18-24 in. (45-60 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer
Other Details
Category
Bulbs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Atlanta, Georgia

Divernon, Illinois

Calabash, North Carolina

Laurens, South Carolina

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Gardener's Notes:

4
positives
0
neutral
0
negative
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L
Stockton, CA | October 2015 | positive

I have enjoyed this plant for about 20 years in Stockton, CA. It has such an unusual, awesome blossom. However, the bloom does not last l...Read More

M
Laurens, SC (Zone 7b) | October 2015 | positive

I grow this in my zone 7b but the foliage dies back in the winter. I do not lift the bulbs or give them any special treatment except for ...Read More

O
| September 2012 | positive

I too purchased these bulbs at a Walmart. I planted them late in a raised box next to a concrete wall facing south. I should mention that...Read More

J
J
Divernon, IL (Zone 5b) | December 2009 | positive

Mine are grown in large containers and overwintered dry in the basement. Flowers have a wonderful 'sculptural' quality. Seems pest-proo...Read More

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