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Showy Pink Ladies Evening Primrose Flowers

Standard · Onagraceae

Showy Pink Ladies evening primrose is a low, spreading perennial wildflower with satiny pink cup-shaped flowers that open most heavily in spring and early summer. It forms a ground-hugging patch from stolons and seed, making it valuable for naturalized pollinator areas but too assertive for tidy mixed borders. This North American native thrives in sun, tolerates drought once rooted, and is happiest in poorer, sharply drained soils. Key facts: 365–450 days to maturity, 6+ hours of sun, 12–18 " spacing. Can be grown in containers with care (3+ gallon minimum).

Updated April 19, 2026 · Backed by 3 cited sources
Overview

At a Glance

The essentials first: timing, light, spacing, seed-starting, container fit, and overall size.

Days to maturity
365–450 days
Sun
6+ hours
Full Sun, 6 8 Hours
Spacing
12–18 "
between plants
Seed start
6–8 weeks
before transplant
Container
Possible
Needs 3+ gal minimum
Height
0.5–1.5 ft
at maturity
Planting window

Zone Planting Guide

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Care

Growing Guide

Everything in one place: seed starting, transplant timing, watering, soil, and structural support.

Seed starting
Germination
Time15–30 days
Optimal temperature68°F
Moving outdoors
Transplanting
Minimum soil temp55°F
Harden off7 days
Moisture
Watering
Weekly0.5–1 "
NeedsLow
Drip or base watering
Root zone
Soil
pH range5.5–7.5
PreferredWell Drained Sandy Or Loamy Soil Of Modest Fertility
Evening Primrose, Showy Pink Ladies Flower seeds

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When you shop through this link, SoilStack earns a small commission at no extra cost to you. It's how we keep the site free and the calendar ad-free. Every product on this page was hand-selected based on university extension research.

Evening Primrose, Showy Pink Ladies Flower seeds

15-30 days.

Shop on Seeds Now
Resilience

Plant Health

Stress tolerance, resistance notes, and the most common problems to watch for as plants mature.

Tolerance
Heat: High Cold: High Drought: High

Common Issues

Aggressive Spread

Cause: Plants move by stolons and self-seeding in open soil

Prevention: Use in contained or naturalized areas and deadhead if spread is unwanted

Crown Rot

Cause: Poor drainage around crowns and stolons

Prevention: Avoid heavy wet soils and overhead irrigation

Summer Dormancy

Cause: Hot dry periods can push plants semi-dormant

Prevention: Provide occasional deep watering if a longer bloom is desired

Feeding & picking

Nutrition & Harvest

How hungry the plant is, what ripe harvest looks like, and how long the crop keeps after picking.

Feeding
Nutrition
Feeding intensityLow feeder
RecipesWorm Castings Topdress
Timing
Harvest

Cut flowers when fully open in cool morning weather, or collect dry capsules after bloom if seed saving is desired.

Expected yield0.05–0.15 lbs/plant
Storage3 days — Best enjoyed in the garden; cut stems are delicate and short-lived. Dry seed capsules thoroughly before storing.
Plant relationships

Companion Planting

Helpful neighbors can support growth or deter pests. Keep antagonistic plants separated to reduce stress and competition.

Avoid planting near
Herb Fennel
What you'll need

Growing Supplies

Based on Showy Pink Ladies Evening Primrose's growth profile -- recommendations matched to this variety's specific requirements.

Drip irrigation / soaker hose kit

Every gardener benefits from putting water at the root zone instead of on the leaves, because drip and soaker systems reduce foliar disease pressure by limiting leaf wetness and soil splash. A quality kit should include a backflow preventer, filter, pressure reducer, and UV-resistant tubing.

Source: Iowa State University Extension; Colorado State University Extension; UMass Extension

Soil test kit

A soil test gives a baseline for pH and nutrient status so gardeners can add only what the soil actually needs. Prioritize a mail-in or lab-affiliated kit whenever possible because extension guidance notes that laboratory testing is more accurate than instant readers.

Source: University of Maryland Extension; Purdue Extension; Montana State University Extension

Quality bypass pruners

Extension guidance favors bypass designs because they make cleaner, closer cuts on living tissue than anvil types. Look for hardened steel blades that can be sharpened, a comfortable grip, and a cutting capacity matched to real home-garden stems.

Source: University of New Hampshire Extension; Iowa State University Extension; Purdue University Extension

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Research

Sources

Reference material and extension guidance used to build this growing guide.

seed_catalog Seeds Nowuniversity North Carolina Extension Gardener Plant Toolboxreference Native wildflower references
Internal links

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