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Perennial Honesty

Lunaria rediviva · Brassicaceae

The gardener's calendar

The right move for September

Ideal time to plant perennial honesty: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

JFMAMJJASOND Planting

ID card

Common name
Perennial honesty, Perennial moonwort
Family
Brassicaceae
Foliage
Deciduous
Flowering
April to June, white or pale lilac flowers
Mature height
60 to 120 cm tall
Hardiness
Very hardy, down to -15°C
Origin
Central and southern Europe
Soil type
Rich, moist, well-drained

Care

Watering

Keep the soil regularly moist during spring and summer growth, especially during prolonged dry spells. Gradually reduce watering after flowering. Avoid waterlogging, which could promote root rot.

Exposure

Plant in partial shade, preferably sheltered from hot afternoon sun. It tolerates light partial shade under tree cover, where its delicate flowers will flourish without excessive drying.

Soil

Prefer fertile soil, enriched with organic matter, slightly moist and well-structured. Adding compost at planting time will help establishment. Avoid overly chalky or compacted soils.

Pruning and cutting

Remove spent flowers to encourage longer flowering. After blooming, leave some stems for natural seed dispersal, then cut back to ground level in late autumn. The plant regenerates naturally in spring.

Fertilizing

A moderate application of balanced fertilizer in spring is sufficient. A layer of compost mulch at the soil surface in early season will gradually feed the soil. Avoid excess nitrogen, which would promote foliage at the expense of flowers.

Diseases and pests

Very hardy, it is rarely affected. Occasionally watch for powdery mildew in conditions of stagnant humidity. Good air circulation and watering at the base limit these risks. Little susceptible to common garden pests.

Did you know?

Lunaria rediviva takes its name from the Latin 'lunaris' (lunar) in reference to its translucent disc-shaped fruits that persist long after flowering, shining like the moon in winter light. Unlike its cousin Lunaria annua, this perennial species was once cultivated in European monastic gardens for its ornamental properties and spiritual symbolism.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.