Dark spots

Question: dark spots

Hi, thank you in advance for reading my help ... About 2 months ago it snowed in my part for about 2 weeks with very low temperatures, so I brought my aeonium specimen into the house for 3 weeks. After this period the leaves became completely green and floppy then I brought it back to direct sunlight but after a few days it began to lose its leaves leaving only the innermost part of the buds and the part of the stems closest to the rosettes became dark brown almost black, also becoming wrinkled and dry and only yesterday I realized that around these spots there was also a red outline. What is happening?? What do you suggest I do ?? Thanks so much…

Answer: dark spots

Dear Antonio,
the aeonium arboreum is a succulent plant very cultivated in the gardens and on the Italian terraces, as this plant generally bears well the winter climate of our peninsula, especially in the regions that have fairly mild winters; they are in fact plants originating from Africa, and therefore in nature they are usually not used to undergoing persistent and intense frosts, let alone snow. In fact, they are cultivated in pots, so that they can be covered in the event of snow or frost, or to be able to place them in a cold greenhouse throughout the winter.
Often we happen to choose plants of this type for the garden, because they have an exotic appearance, particular foliage, flowering that we love; but we often forget that they are not plants present in the spontaneous flora of our country, and therefore their cultivation needs are a little different from those they can receive in the garden throughout the year.
Your Aeonium was then first frozen by snow and cold, which in the winter of 2011-2012 was really special, and afterwards it was suddenly brought into a spring climate with summer drought, like the one in the house.
Right now your aeonium is certainly particularly prone to attack by fungi and insects, so I advise you to prune all the branches, keeping only the turgid and firm parts, hoping they will sprout in the next few weeks; if he still has a few leaves, or maybe we hope some whole rosette, still intact, remove them from the stems and try to use them as if they were cuttings. If your plant should resume, remember next year to keep an eye on its safety: if the weather warns us that within a few days the temperatures will go many degrees below zero, cover the vase with non-woven fabric, or place it in a sheltered area, but always outdoors. Sometimes it is enough just to place the vase on the terrace, near a house wall, so that it receives a little warmth that comes out of the house, and is sheltered from snow or rain.
The climate in the home is not suitable for cultivating a plant used to being outdoors, as the air is too dry, and the temperatures are excessively high. In general, it avoids adding stress to the stress already received: when a plant is damaged by frost, you can try to cover it, but avoid moving it suddenly to a place with 20 ° C.