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These plants shouldn't be grown in the garden during the cold period; in autumn the plants usually perish, and should be eradicated from the ground. The Vervain should be preferably located in a place where it can have at least a few hours a day of direct solar light.The Vervain can't stand cold weather, therefore in general it should be grown in a sheltered place; during the Spring months, when the minimum temperatures are above zero, it can be moved outside.
Fertilize Vervain
Before placing the annuals, let’s enrich the soil with a small dose of organic fertilizer or slow release granular chemical fertilizer; during the spring we should use a specific fertilizer for flowering plants to be mixed with the irrigating water, to be used every 20-30 days.
Cultivation Vervain
The Vervain has a panel-like development, therefore it tends to widen very much. These plants have a one or two year development. This plant in the spring, summer, autumn, winter assumes a red colouring; it is medium in size and can reach 20 cm high. It doesn't keep its leaves in the winter.
Water Vervain
Let's water abundantly, moistening the soil deeply with 2-3 glasses of water , but let's act only when the substratum is dry, leaving it dry even for 1-2 weeks before watering it. As the cold weather arrives, in autumn, we can interrupt watering, and let the plants perish.
Pests Vervain
As the day-time temperatures rise at the beginning of the spring, it is agreeable to practice a preventive treatment, with a wide-range insecticide, which should be applied when there aren’t flowerings in the garden. Before the buds become too large, it is advisable to also treat them with a wide-range fungicide, to prevent the development of fungal diseases which spread easily when there is an elevated environmental moisture.
Mold Vervain
They prefer dissolved soils, with an optimal drainage.
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Plant Vervain
The Vervain is scented; It can be grown in a vase when desired. The indications given in this article are related to a medium size plant.
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This page concerns the weather mediterranean it is possible to choose another climate area alpine continental