Oenothera biennis - Evening-primrose

continental : Locate the the Oenothera biennis In a sunny place.
The Oenothera biennis is a very rustic plant, that can bear very harsh temperatures; it is advisable to grow it in the garden.

alpine : Plant which needs at least a few hours a day of solar light.
The Oenothera biennis is surely a rustic plant, it’s possible to grow it in the garden year round.

mediterranean : We suggest placing the the Oenothera biennis so that it can receive at least a few hours of direct solar rays.
The Oenothera biennis is a rustic plant, which can be planted in the garden during the whole year.

continental : Let’s try to always keep the growing substratum of the the Oenothera biennis damp, watering very frequently with 1,5 litres of water; if the weather is very hot and dry we even water every 1-2 weeks.

alpine : As the hot season arrives, these plants need abundant and regular watering, using 0,5 litres of water, which keep the soil cool and damp; let’s water every 2-3 weeks, or even more often if it is very hot.

mediterranean : The Oenothera biennis loves damp and cool soils, therefore it is necessary to water it very often, keeping the soil slightly damp; in any case it is always advisable to avoid water stagnation and excess watering: it is best to water every 0-1 weeks.

Fertilization Oenothera biennis : In the summer let’s fertilize medicinal plants using a slow release fertilizer, to add to the soil every 3-4 months; we can also fertilize them using a fertilizer for flowering plants, to mix to the irrigating water every 15-20 days.

Treatments Oenothera biennis : During the hot months attacks by ticks and rust are likely; the treatments should be applied during the coolest hours of the day. If possible, we suggest avoiding treatments with wide-range products, which could kill the populations of useful insects: let’s favour specific products.