How to Grow Honesty
Wikimedia Commons
Honesty
Lunaria annua
flowerHonesty is a charming biennial or short-lived perennial flower known for its delicate purple, pink, or white blooms and distinctive papery, translucent seed pods that resemble silver coins. The silvery seed pods are prized for dried flower arrangements and ornamental displays. This cottage garden favorite self-seeds readily and brings both spring color and lasting winter interest to gardens.
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Example Honesty timeline · Pittsburgh, PA (Zone 6b)
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Plant Honesty
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Honesty blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Honesty dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; prefers cooler to moderate climates
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Get my Honesty timeline →Growth Stages
Seedling
2-4 weeksTiny seedlings emerge with cotyledons (seed leaves) and develop first true leaves. Growth is slow initially.
Keep soil moist; provide bright light; thin seedlings to proper spacing. Protect from slugs and snails.
Vegetative (First Year - Biennial)
6-8 monthsPlant develops a basal rosette of oval to heart-shaped green leaves. No flowering occurs in first year; plant is establishing root system and foliage.
Water regularly; maintain consistent moisture. Remove competing weeds. Apply balanced fertilizer monthly if soil is poor.
Flowering
4-6 weeksIn spring of second year, tall flower spikes emerge (18-36 inches tall) bearing clusters of four-petaled flowers in purple, pink, lavender, or white. Blooms are fragrant and attractive to pollinators.
Deadhead spent flowers if seed pods not desired (extends flowering). Stake tall varieties if needed. Continue regular watering.
Seed Pod Development & Maturation
6-8 weeksAfter flowering, distinctive flattened, oval seed pods form and gradually turn from green to papery white or silvery. Pods become translucent, revealing silvery-white septa (partitions) with dark seeds visible inside.
Allow pods to fully mature and dry on plant for best effect. Do not deadhead if saving seeds. Pods are ready to harvest when papery and dry.
Seed Dispersal & Harvest
Ongoing from mid-summer through fallFully mature, dry pods split naturally and release seeds. Pods are at peak beauty and ready for harvesting for dried arrangements.
Harvest seed pods before rain softens them. Cut stems and hang to dry completely indoors. Save seeds from pods for next season's planting.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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and
Hand-pick in early morning; apply copper tape or slug barriers; encourage ground beetles; nematodes in soil
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Row covers on young plants; kaolin clay spray; reflective mulches; insecticidal soap for heavy infestations
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Spray with insecticidal soap; encourage beneficial insects; yellow sticky traps; neem oil as last resort
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Row covers; hand-pick caterpillars; encourage parasitic wasps; Bacillus thuringiensis (Bt) spray if needed
Uses
Dried Flower Arrangements
CraftThe silvery seed pods are highly prized for dried floral displays, winter bouquets, and long-lasting table decorations. They retain their translucent beauty for months or even years. [source]
Edible Flowers
CulinaryThe delicate flowers are edible with a mild, slightly spicy flavor (due to the plant's relation to cabbage family) and can be used as garnish in salads, as candied flowers, or in herbal teas. [source]
Traditional Herbal Remedy
MedicinalHistorically used in traditional European herbal medicine as a diuretic and respiratory remedy, though modern scientific evidence is limited. [source]
Pollinator Magnet
WildlifeSpring flowers attract bees, butterflies, and other pollinators, making it valuable for supporting early-season pollinator populations in the garden. [source]
Natural Pest Control
HouseholdAs a member of the Brassicaceae family, honesty produces glucosinolates which some gardeners believe help repel certain garden pests when planted as a companion plant. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For dried flowers: Harvest seed pods in late summer/early fall when they turn papery and silvery but before rain softens them. Cut entire stem, bundle loosely, and hang upside-down in a warm, dry, airy location for 2-3 weeks. Once dry, gently rub off the outer papery skin to reveal the silvery septa for arrangements. For seeds: Allow some pods to mature fully on plant, then collect and store dry seeds in cool place for spring sowing.
Fun Facts
- 🌱 The plant earned its common name 'Honesty' because of its transparent seed pods, symbolizing honesty and sincerity—you can see the seeds inside as clearly as day.
- 🌱 Honesty has been cultivated in European gardens since the 16th century and was brought to North America by colonists; it now self-seeds so readily that it's naturalized in many regions.
- 🌱 The papery seed pod walls are called 'septa' and have been used historically as a natural light-diffusing material in lamps and decorative crafts before modern alternatives were available.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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