The winter jasmine or g. of St. Joseph is a very rustic plant, which grows well in any position, both in full sun and in complete shade.
However, we must remember that plants in full sun bloom abundantly, while those in the shade tend to produce more leaves than flowers. If the winters are particularly cold, it can occasionally happen that the frost spoils the floral buds of the Jasminum nudiflorum.
If you live in areas with very cold winters it is therefore advisable to watch out and, if necessary, cover the plant with non-woven fabric in December and January.
In areas with a very hot climate it is suggested to place the jasmine in a semi-shady place.
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The Jasminum nudiflorum usually doesn’t need watering, because it needs only rainwater; however, if the summers are too dry we suggest to provide water at least every 15-20 days, to avoid excessive drought.
It is recommended to bury mature organic fertilizer at the base of the winter g. d’ at the beginning of autumn, to ensure a good content of organic matter in the soil and the necessary nourishment of the plant.
The G. di S. Giuseppe does not have any particular needs regarding the soil, because it adapts very well also in the garden soil; to improve the development of the plant it is however good to keep the substratum rich in humus, adding soil conditioners and fertilizers if the growth of the plant and the blooms are too scarce.
When planting this shrub remember to ensure good drainage by adding coarse material to the soil around the roots.
At the beginning of autumn, cuttings of about 10-15 cm can be taken, which are to be rooted in a mixture of peat and sand in equal parts; the small plants are to be kept in a protected place for at least two winters before being placed in the garden. The falling stems often tend to root spontaneously in contact with the soil; in this case, it is sufficient to remove a stem rooted from the mother plant, and to bury it directly in the ground.
Winter jasmine, G. di S. Giuseppe – Jasminum nudiflorum: Parasites and diseases
The Jasminum nudiflorum is a rather rustic and resistant plant, but nevertheless it can be attacked by aphids and cochineals, which ruin the leaves. For this reason, it is advisable to intervene with preventive treatments with broad-spectrum insecticides before flowering or with specific substances when the plant is affected by these pests, so as to quickly and permanently counteract the possible negative effects.
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