Question: will you take back my senna?
Hi everyone, I have a Sine Corymbosa bought last year.
This winter I covered it with frost, also covering the base with a rag to protect it from strong frost but so far it has not yet sprouted even though I notice that some green spots have it ...
How can I help you?
Senna corymbosa: Answer: cultivate the senna
senna corymbosa is a perennial or shrubby plant resistant to cold, which can withstand temperatures even close to -12 ° C. Surely the mulching and your winter treatments have been useful, since you declare there are still green parts; except that the 2011-2012 winter was decidedly very rigid, colder than the Italian seasonal averages; This is why so many plants have suffered, and they have been ruined, even a lot.
Generally the senna begins to produce the first buds in spring, when the minimum temperatures are definitely above 5 ° C; It is probable that your plant has suffered damage due to the rigors of winter, so it may take some more time before sprouting. In any case, if it has some green parts, it should not miss much to its vegetative growth. A good pruning of all the dark, ruined, dry parts is certainly helpful, since it favors and stimulates the development of new shoots; in addition to this you can start with periodic fertilizations, not excessive, based on fertilizers for flowering plants. In the nursery you can also find particular fertilizers, generally called nutritional activators, or with similar terms, which are used in cases like yours, or with plants that have undergone unfavorable cultivation conditions, such as cold, or drought; a single application is generally sufficient to stimulate the growth of the plant, even if there is nothing that can anticipate the normal cycle of plant development, if not the hot climate and the days that lengthen.