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Hemlock water dropwort

Oenanthe crocata · Apiaceae

The gardener's calendar

The right move for September

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

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ID card

Family
Apiaceae
Type
Perennial herb
Foliage
Deciduous
Flowering
May to July
Mature size
60 to 120 cm in height
Hardiness
Temperate zones, -5 to -10 °C
Origin
Western and central Europe
Natural habitat
Humid zones, stream edges

Care

Watering

Saffron oenanthe appreciates constantly moist soil. Water regularly, especially during growth periods and in sustained heat. In naturally marshy areas or along waterways, manual watering can be minimal. However, avoid complete drying out.

Exposure

Choose a location in full sun to partial shade to promote generous flowering. In very hot climates, partial afternoon shade can be beneficial. This plant tolerates partially shaded areas well.

Soil

This plant prefers rich, moist soils that are slightly acidic to neutral. It thrives in marshy, peaty, or well-draining terrains. Improve overly dry soils by adding organic matter (compost, potting soil).

Fertilizer

A balanced fertilizer application in spring is generally sufficient. In poor soils, a second application in early summer can stimulate flowering. Prefer organic or slow-release fertilizers for sustained nutritional balance.

Pruning and cleaning

Cut back dried and faded stems after flowering to encourage branching and better shape. Cleaning dead foliage in late autumn facilitates spring regrowth. Remove spent flowers to extend the flowering period.

Diseases and pests

Saffron oenanthe is generally robust. Watch for powdery mildew and root rot in case of stagnant excess moisture. Ensure good aeration at the plant's base and adequate drainage. Aphids may occasionally appear; a water spray is usually sufficient.

Did you know?

Saffron oenanthe owes its name to its supposed resemblance to saffron, although it has no botanical connection to this precious spice. Historically, plants in the Apiaceae family have long intrigued European botanists due to their profusion in humid zones, with some species in the genus even being traditionally used in folk phytotherapy, though their use requires caution.

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.