Some basic rules

Petunia is a very popular and widespread garden and pot plant for the beauty of its flowers. The species included within the genus Petunia are 40: they are herbaceous plants, perennial or annual, in most cases from South America. Petunia specimens consist of a large, very branched bush with drooping or prostrate stems. They have a variable height between 25 and 60 cm and fragrant leaves, light green and slightly sticky to the touch. These species need recurrent and abundant watering: in fact, in cases of prolonged lack of water, they perish until they die. Generally, they can only tolerate drought for a few hours. Consequently, the Petunia should be watered every 2-3 days, decreasing the frequency between a water intake and other during the summer months. At the same time, water stagnation must be avoided.

Characteristics of petunia

Petunia has a solitary flower with a tubular corolla, supported by axillary or terminal peduncles. The colors of the petals range from white to purple, from pink to blue and the edges of the corolla are five-lobed and wide. Petunia is characterized by a flowering that goes from April to mid-autumn and for having a very abundant yield. On the market there are many cultivars and different types of hybrids: in some cases there are even jagged corollas, double flowers or with a wrinkled effect. Among the species of petunia obtained through crosses there are the dwarf types, the climbing ones, the double ones and the giant ones. The flowers can also be streaked, veined, double, with a serrated edge, starry or with a ruffled edge.

The soil and fertilization

Petunias need a deep substrate, fresh and rich in organic matter to develop optimally. The ideal base is a good quality universal soil to which finely chopped bark has been added. In addition, the drainage of the soil is improved by mixing a little sand into it. If you grow Petunia in pots, remember to mix a small amount of humus or organic fertilizer with the soil when repotting: especially mature manure is used. The planting takes place approximately in March, also taking into account the climatic conditions. In the period from May to September, every 15-20 days the specimen must be fertilized with specific products for flowering plants, to be diluted in the water used for watering.

La Petunia: Some precautions

Petunia can be planted in pots or planters, in the ground or in hanging bowls. In any case, the plant has an optimal development if it is located in a sunny and very bright position: the ideal solution would be to receive sunlight for at least six hours a day. If grown in shady or partial shade locations, lack of sunlight can result in poor blooms. Petunia is a plant characterized by thin stems, therefore it is very sensitive to the action of gusts of wind: to protect these quite fragile specimens, it is necessary to place them in sheltered places. These are flowering plants that fear the cold and need a temperate-warm climate to be able to develop at their best.

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