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Perennials are those whose growth does not die out in one or two years as with annuals or biennials. In fact, perennials can continue to live for many years after flowering and withering.

Some of the most read articles on perennials are

* primrose

* hellebore

* heather

* snowdrop

Check out our fact sheet on some of the most interesting perennials.

In the list below you will find, listed in alphabetical order our complete cards on perennial most popular. Consult them for advice on growing and caring for them. The perennials they are plants that last more than two years and bloom every year.

They are usually herbaceous, but they can also be woody at the base.

Climate has a lot of influence on classification because some are potentially perennial in hot countries while they are considered annuals in more rigid areas.

Some completely lose the aerial part during the winter. Others, ... continue

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continue ... , as we have said, they retain a woody or semi-woody part. Still others are evergreen.

The answers can be manifold. First of all, within this category we find a huge variety of flowers, with beautiful colors and different shapes. To this we can add the incredible differences in posture, very useful for creating movement in the borders and, last but not least, the shape and colors of the leaves, very important for pleasantly alternating the various textures.

In recent years they have found many admirers because they are also interesting during the winter, especially if they leave berries, soft infructescences or pods that can be covered by snow or frost, creating magical atmospheres.

Perennials are often not just beautiful to admire. In fact some are very fragrant and among them we can also include some aromatic plants.

Scents in the garden should never be underestimated because they are the feature that is fixed most deeply in our mind and can become the most evocative feature over the years.

In addition, the inflorescences of perennials have the ability to make our garden "alive" by attracting pleasant insects such as bees and butterflies. For this purpose, the most nature-loving people can specifically study their garden by choosing the most fragrant and most suitable flowers for the insect they want to attract and make a constant visitor to our green space.

In addition to insects, we can also try to attract birds such as friguelli or goldfinches that feed on autumn berries and inflorescences and use the soft down of some plants as a material for building the nest.

The birds will also help us fight some parasites such as caterpillars, larvae or various insects.

Perennials have many advantages over annuals and biennials.

First of all, most of them last for many years and tend to spread out or spread. It is therefore very difficult for them to get lost or die permanently.

If we really like a certain variety, it is enough to wait a few years for it to enlarge and then divide it during the winter and create other plants to use in other parts of the garden or to give to other green lovers.

Furthermore, most perennials are easy to cultivate, are rarely attacked by parasites in a serious manner and require relatively little care, especially if they grow in compliance with their specific needs of exposure, soil and irrigation.

The only care required is a spring or autumn cleaning of the exhausted barrels of the previous year and any cutting in the semi-woody specimens.

Sometimes, for the taller varieties, the use of stakes may be necessary.

Perennials are very varied and versatile plants: they can be used alone as isolated specimens (for example peonies) or in groups in formal gardens or in borders with annuals, bulbous, rhizomatous or shrubs. They can also be grown in containers and placed in the garden at the time of flowering in order to always have color or find a location on balconies and terraces.

In general, perennials and shrubs are considered the supporting structure in a garden, what characterizes it most since they create patterns that recur every year to which annual plants and bulbous plants can then be combined, easier to move and insert creating an element of innovation every year.

Having the most diverse postures (ground cover, climbing, erect, prostrate) it is not surprising that they always manage to find a location and are more used every day.

Garden perennials find their origin in virtually every habitat on the planet, from meadows to mountains, streams, lakes and rivers, to beaches and arid areas.

Men have always observed them, taken them and tried to cultivate them in conditions similar to those of the places of origin.

Varieties from all over the world arrived in our gardens thanks to plant hunters who, especially in the 1700s and 1800s, went in search of particular and unusual specimens.

A danger not to be underestimated, however, is the potential invasiveness of allochthonous specimens. More than once in the history of these introductions it has been verified that the plant became a danger to the local flora by stealing space and suffocating it.

Some famous examples are Fallopia Japonica and Heracleum mantegazzianum which have created and are creating many problems in England and Wales.

One of the peculiar characteristics of perennials is their variety, even within the same species.

At the origin of this we have the great ability to have mutations in the colors, in the shape of the flowers and in their habitus (for example dwarf varieties). These phenomena occur both in nature and in cultivation.

The selection work consists precisely in detecting these variations, in enhancing them and making them stable.

For this reason, nurserymen carefully monitor their plants and, even through targeted crosses, try to obtain increasingly beautiful, lively, resistant and varied cultivars.

Nurserymen (especially in England, France and the United States) often dedicate themselves to the selection of a single plant in particular (we have beautiful examples for heuchera, delphinium, hellebores, echinaceae and geranium) obtaining spectacular results and cultivars that in a short time they become famous and spread all over the world.

The use of perennials in a systematic way began in the nineteenth century and was introduced by Gertrude Jekyll who found inspiration in the traditional English cottage garden where plants of all kinds were combined to create harmonic alternations of colors and textures.

The herbaceous border consists of the exclusive combination of perennials rustic, usually in groups of three per variety. They are placed along a wall, a path or a hedge. The advice is always to place the tallest plants on the back and the low ground cover ones on the front.

It can be said in general that in a herbaceous garden the general vision is always better than the vision of a particular one. What is important is the glance and the combinations.

After the great nineteenth-century fortune this style fell into disuse, especially because it required a lot of maintenance.

It came back into fashion in the 1960s, when some dwarf varieties were created that did not need support and therefore were more autonomous.

We then came to the idea of ​​the contemporary cottage garden: the plants were easier to use and thanks to the new varieties and their integration into the garden, it was possible without great effort to have a pleasant garden for most of the year.

Thanks to these characteristics, a taste and particular attention to them is also developing in Italy, these plants are being cultivated more and more and many nurseries have been born that are dedicated to them in an exclusive way.

Watch the video

Video: Starting A Perennial Garden