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Lunaria Silver Dollar Flowers

Standard · Brassicaceae

Lunaria Silver Dollar, also called money plant or honesty, is an unusual biennial grown for fragrant lavender flowers and its translucent silver seed pods. Seeds Now describes the plant as most striking once the flat disk-like pods turn silvery as the plant matures. It is especially useful for cottage gardens, naturalized drifts, and dried arrangements where the seed pods can be showcased. Key facts: 365–430 days to maturity, 4+ hours of sun, 12–18 " spacing. Can be grown in containers with care (5+ 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
365–430 days
Sun
4+ hours
Full Sun To Part Sun
Spacing
12–18 "
between plants
Seed start
6–8 weeks
before transplant
Container
Possible
Needs 5+ gal minimum
Height
2–3 ft
at maturity
Planting window

Zone Planting Guide

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This card updates instantly with viability, frost timing, and any planting notes for your selected zone.

Care

Growing Guide

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

Seed starting
Germination
Time10–20 days
Optimal temperature65°F
Seed depth0.125"
Moving outdoors
Transplanting
Minimum soil temp50°F
Harden off7 days
Moisture
Watering
Weekly0.75–1 "
NeedsModerate
Drip or base watering
Root zone
Soil
pH range6–7.5
PreferredWell Drained Average To Moderately Fertile Loam
Lunaria Silver Dollar 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.

Lunaria Silver Dollar Flower seeds

10-14 days. The Lunaria Silver Dollar ( Lunaria annua ) is a most unusual biennial.

Shop on Seeds Now
Resilience

Plant Health

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

Tolerance
Heat: Moderate Cold: Moderate Drought: Low

Common Issues

Self Seeding

Cause: Mature pods release seed readily and can naturalize around the bed.

Prevention: Harvest pods or deadhead if you want to limit volunteer seedlings.

Flea Beetle Damage

Cause: Young brassica-family foliage can be nibbled by flea beetles.

Prevention: Protect seedlings early if pest pressure is high.

Root Rot

Cause: Wet poorly drained soil weakens roots and crowns.

Prevention: Provide drainage and avoid standing winter moisture.

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 intensityLight feeder
RecipesRoot Drench, Worm Castings Topdress
Timing
Harvest

Harvest flowering stems when the first lavender blooms are open, or cut stems later once pods have dried and turned papery and silver.

Expected yield0–0.5 lbs/plant
Storage7 days — Fresh flowering stems last about a week; dry pod stems store much longer once fully cured.
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 Lunaria Silver Dollar'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 Colorado State University Extensionuniversity N.C. State Extension
Internal links

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