We are used to thinking of jasmine as a creeper with white, fragrant flowers; in reality the genus jasminum includes dozens of plants, many of which produce lemon-yellow or golden-yellow flowers, and in many cases they are round-shaped shrubs, useful for preparing beautiful flowering hedges. Some of these are very common in Europe, rustic and well adapted to living in our gardens; the most famous is certainly Jasminum nudiflorum.
Jasmine are climbing or shrubby plants belonging to the Oleaceae family. The genus has about 200 species mostly from tropical and subtropical regions from Asia. Those cultivated are, however, at most twenty (even if there are countless varieties and cultivars).
Most of these have white or slightly pink flowers, but bright yellow is also quite common.
Some of these jasmines are already very widespread and known in our country (such as the very popular nudiflorum), others, however, still remain almost exclusive prerogative of the enthusiasts and it would be worth to know them in more depth. They can indeed be a nice alternative for covering vertical spaces, especially in the central-southern regions, where the climate is not an obstacle to their growth.
The Jasmine of St. Joseph
Jasminum nudiflorum is also called Jasmine of St. Joseph because it seems to flourish in particular on the day of St. Joseph, or March 19th. In fact it is a shrub of Asian origin, widespread in Italy for centuries, and cultivated in the garden: the flowering, as the botanical name suggests, takes place with the plant completely stripped of the leaves, at the end of winter, more or less starting from mid-March. This jasmine is easy to grow; it develops in any soil, even stony and not very rich in organic matter; after planting it needs a good watering, to allow the roots to take root, then it is satisfied with the rainfall and does not require great care. The flowering occurs, in fact, between the end of winter and the beginning of spring; later the plant develops small light green leaves; these shrubs are very dense and compact, and generally do not exceed 100-140 cm in height. A quick pruning at the end of flowering helps to keep our jasmine more compact, and to remove any branches that may have been ruined during the cold season. This jasmine does not fear the cold, and prefers sunny locations; if cultivated in an excessively shaded place it tends to bloom little.
It adapts to different exposures and climates, even if the full sun during the winter favors an abundant flowering. Irrigation is not necessary for adult plants in the ground, unless there are long droughts.
Pruning is not essential. We only intervene if we want to contain development, especially in bush-grown specimens. The right time for this operation is spring, after the end of flowering (never instead in autumn). The plant in fact produces buds on the branches produced the previous year.
|Variety||Height||Foliage, flowering||Rusticitа||Use and other features|
|Jasminum nudiflorum, jasmine of San Giuseppe, Jasmine in winter||3-4 m|| Deciduous foliage.|
Flowering from December to April
|Up to -20 ° C|| As a creeper, as hanging, as a ground cover or as an isolated bush.|
Even in large vessels.
|Jasminum mesnyi (or primulinum)||4 m|| Semi-persistent foliage|
Flowering from November to March, it can repeat later
|Up to 5 ° C|| Specimen isolated or bred as a climber.|
|Jasminum odoratissimum||Up to 4 m|| Semi-persistent foliage|
Continuous flowering, from spring to autumn
|Up to 5 ° C|| Isolated, climbing specimen, free hedge.|
Little perfumed flowers
It needs light and heat
|Jasminum parkeri||30 cm|| Semi-persistent foliage|
Flowering from March to May, but can repeat
|Up to -10 ° C|| Vase, ground cover, small hedges|
Suitable for small spaces
|Jasminum humile revolutum||Up to 2.5 m|| Semi-persistent foliage|
Flowering continues from May to August
|Up to -10 ° C|| Climber, isolated specimen, decombente.|
|Jasminum frutican||1-2 m|| Persistent or semi-persistent foliage depending on the climate|
Flowering between April and June
|Up to -10 ° C|| Small isolated shrub, free hedge.|
|Jasminum floridum||From 1 to 2 meters||From May to July||Up to -10 ° C|| Rounded shape.|
Suitable as an isolated specimen, for the creation of free or potted hedges.