Large-Flower Evening Primrose
Oenothera glazioviana
Educational content — not medical, botanical, or professional advice. Always consult a qualified clinician before using any herbal preparation — especially during pregnancy, breastfeeding, while on medication, or for children. How we source & review →
Pl. A525 — Oenothera glazioviana
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IOverview
Overview
The Large-Flower Evening Primrose (Oenothera glazioviana) is a biennial forb/herb that can grow up to 1.5 meters in height and is native to regions including Afghanistan, Alabama, Albania, Angola, Argentina Northeast, and Arkansas. This plant thrives in light or medium soil with a pH range of 6.5–7, making it adaptable to various growing conditions. It is known for its edible parts—leaves, roots, and shoots—which can be harvested. The Large-Flower Evening Primrose is also notable for its distinctive large flowers, which contribute to its ornamental value in gardens. Its native range extends across multiple continents, from North America to Asia and Europe, showcasing its widespread adaptability.
Quick answers
What is Large-Flower Evening Primrose?
The Large-Flower Evening Primrose (Oenothera glazioviana) is a biennial forb/herb that can grow up to 1.5 meters in height and is native to regions including Afghanistan, Alabama, Albania, Angola, Argentina Northeast, and Arkansas. This plant thrives in light or medium soil with a pH range of 6.
What is Large-Flower Evening Primrose used for?
Traditionally used for topical & skin. Each claim is evidence-rated — see Section II for full citations.
Best for
Top 1 evidence-ranked use of Large-Flower Evening Primrose
Clinicaluses · safety · chemistry · dosagemedicinal profile
IIBenefits & evidence
1 claim · 0 sources
Benefits & evidence
1 claim · 0 sources- Traditional-use note: Large-Flower Evening Primrose appears in herbal sources around traditional skin-care routines, often as a topical preparation. PlantSage presents this as ethnobotanical context, not as medical advice.
Traditional context only. This reviewed claim keeps the original low confidence level, but avoids treatment, disease, dosage, or guaranteed-effect language.
IV·bMixology suggestions
1 draft
Mixology suggestions
1 draftEditorial drafts. These pairings are AI-suggested from traditional herbal lore. Always verify with a qualified herbalist before brewing.
Large-Flower Evening Primrose support blend
generaltea
AI returned a direct ingredient list; normalized into one draft blend for editorial review.
Growingconditions · propagation · uses
VCultivation
Cultivation
Large-Flower Evening Primrose thrives in light to medium soil with a pH of 6.5–7 and prefers a dry to moist environment. It is hardy in zones 3-7 and can grow up to 1.5 meters tall as a biennial. This plant requires full sun to partial shade and should be propagated by seed, which can be sown directly into the garden bed or started indoors. Harvest edible parts such as leaves, roots, and shoots for culinary use. Skip hardiness zones not listed in the data, as it is generally hardy in temperate regions.
Light
8/10
Water
Dry, Moist
Soil
Light (sandy), Medium
Hardiness
3-7
Life cycle
Biennial
Habit
Forb/herb
Mature size
1.5 m tall
Soil pH
6.5–7
For first-time growers
How to grow Large-Flower Evening Primrose for the first time
8steps
Start with Large-Flower Evening Primrose as a simple, low-maintenance addition to your garden.
- 1
What you'll need
Seeds or young plants, a trowel, and a watering can.
- 2
Best time to plant
Plant in spring after the last frost or in fall before the first freeze.
- 3
Soil and container prep
Choose a well-draining soil with a pH between 6.5 and 7, and prepare by mixing in some compost.
- 4
Sowing or transplanting
Direct sow seeds 1 cm deep and about 30 cm apart, or transplant young plants into the garden.
- 5
First two weeks
Water regularly to keep soil moist but not waterlogged. Monitor for pests and diseases.
- 6
Ongoing care
Provide light watering during dry spells and deadhead spent flowers to encourage more blooms.
- 7
Harvest or pruning
Prune back after flowering to maintain the plant's shape and prevent self-seeding.
- 8
Common mistakes
Overwatering, planting in heavy soil, neglecting to deadhead spent flowers.
VIEdible & utility
Edible & utility
Edible parts:LeavesRootShoots
Edible uses: Oil
Other uses:oilFragrance
Contextrange · companions · related
VIIDistribution
30 native · 0 introduced
Distribution
30 native · 0 introducedDistribution across4 continents· 30 native
Europe9 regions
native (9)AlbaniaAustriaBelgiumBulgariaDenmarkFranceGermanyPortugalSpain
Asia2 regions
native (2)AfghanistanChina
Americas2 regions
native (2)ColombiaEcuador
Africa1 region
native (1)Angola
Broader regions
native:Alabama, Argentina Northeast, Arkansas, Brazil South, Brazil Southeast, British Columbia, California, Cape Provinces, Chile Central, Chile South, Connecticut, Czechoslovakia, Free State
IXSpecimen gallery
1 image
Specimen gallery
1 imageXSee also
8 related
See also
8 relatedPlants you might compare or use together — scored by shared family, common use cases, and growing requirements.
shared use cases
Different families, similar therapeutic role — good for comparing.
XI
Explore further
Companion planting
Compare with similar plants
Growing zone
XII
About this entry
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