The jasmine leaves fall

Question: Jasmine leaves fall

on the terrace I have a jasmine in a large vase that climbs the wall with a special wooden grill. I bought the plant 2 years ago
from a florist. everything has gone wonderfully until today. during flowering, especially the old leaves have begun to turn yellow and fall in abundance so much as to strip the jasmine. For fear of the very hot climate I abundantly watered the plant and maybe fertilized it in excess. I ask how can I do to not lose the plant and to allow a revival of greening bare branches. Thanks

Answer: Jasmine leaves fall

Dear Maria Grazia,
in Italy the term jasmine refers to two very different plants; jasmine, or jasminum officinale, which produces white and fragrant flowers in spring, with pinnate leaves, consisting of small lanceolate leaves; and the trachelospermum jasminoides, which produces flowers throughout the summer very similar to those of jasmine, with oval, dark green, leathery leaves. I am of the opinion that your jasmine is of the second type, or a trachelospermum, also called rincosperma, ricosperno, rincospermo. This plant is very much cultivated as a climber, because it has few problems and tends to settle for what it finds, enduring summer heat, drought and even frost, even if intense and persistent. These plants are evergreen, and in the spring, when they begin to produce new shoots, they lose some of the leaves of the previous year, which tend to turn red before falling, just like the leaves of deciduous trees in autumn. In your case, however, it seems to me that the fall of the leaves is greater than that which occurs physiologically every year. From what you say it could be both the amount of water and the excessively used fertilizer. Consider that a potted plant needs a little fertilizer every year, and usually at the end of winter about a handful of slow release granular fertilizer is added to the pot, which will gradually dissolve with each watering. It may happen that large quantities of fertilizer have a very negative influence on the roots, which suffer a lot, with consequent yellowing and fall of the foliage; these symptoms are often progressively suppressed by new waterings, which dilute the fertilizer, giving back to the roots a growing substrate where they can live. But the yellowing of the foliage may also be due to excess watering, which jasmine does not like, especially if cultivated in pots, given that it does not have the possibility of extending its roots in search of a bit of soil not saturated with water . When watering the jasmine, even in the height of summer, it is good to wait for the soil to dry completely between two waterings, to avoid damaging stagnation, which favors the appearance of fungal diseases, at the roots or at the collar of the plant. If the situation has not changed with the weeks, I think it is appropriate to change the earth in the pot, so as to eliminate the excess fertilizer, and also any fungal parasites (or animals), and to allow the roots of the your jasmine to develop unhindered.