Oenothera Species, Whitest Evening-Primrose

Oenotheraalbicaulis

Family
Onagraceae (on-uh-GRAY-see-ee)
Genus
Oenothera (ee-no-THEE-ruh)
Species
albicaulis (al-bih-KAW-liss)
Synonym
Oenothera albicaulis
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
under 6 in. (15 cm)
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing
3-6 in. (7-15 cm)
Hardiness
Not Applicable
Bloom Color
Pale Pink
White/Near White
Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other Details
Category
Alpines and Rock Gardens
Annuals
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
8.6 to 9.0 (strongly alkaline)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow outdoors in fall
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Bag seedheads to capture ripening seed
Collect seedhead/pod when flowers fade; allow to dry
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Regional

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

Clarkdale, Arizona

Rolla, Kansas

Elephant Butte, New Mexico

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Gardener's Notes:

1
positive
0
neutral
0
negative
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R
Stratford, TX (Zone 6b) | May 2010 | positive

Pretty evening flowers; if kept cut back, they will stay short and still bloom (we found this by mowing them, but they still will put on ...Read More

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