The Carmona has a particular liking of certain climate, as it is very sensitive to its habitat. Temperature ranging from 15 to 25 degrees Celsius (59 to 77 in Fahrenheit) is recommended to keep the tree in most of the time, if not all. It also requires daily sunlight, but not too much, as 1 hour of direct sunlight per day will do fine. If daily light control is a hassle, a position that’s bright but free of direct sunlight is also fine, as long as the temperature is set up right. Watering requires some care, as the soil should be kept moist most of the time, but not to the level where it is waterlogged. Humidity trays are highly recommended in dry areas as watering will not keep the recommended humidity constant. Placing some gravel or small stones between the pot and the tray is recommended, as the water in humidity tray should not touch the pot itself, in case it interferes with the moist level of the soil in the pot. Extra care is necessary in the case of outdoor positioning during the summer months in order to give the plant as little stress as possible. It is beneficial to the tree to be placed outdoors during the warmer months, as long as the temperature swing is not too extreme and does not fall below 12 degrees Celsius (54 in Fahrenheit) for a long time. The Carmona reacts badly to cold draughts and sudden temperature changes, as it can cause leaf drops. If this happens it is crucial to return the tree to its preferable temperature range, and it will be back to a normal state in a short order.
Fertilization should take place weekly or biweekly during the growing seasons, generally from spring to autumn, and monthly during the winter months. Most common fertilizers will do fine, but balanced fertilizers with even amounts of nutrients will do best. In case of using a personally preferred fertilizer, however, it is safe to refer to the guidelines on the fertilizer.
Repotting – Try to repot the Carmona every 2 to 3 years, but it is unnecessary if the roots are not pot bound yet. Spring is the best month to repot the Carmona, with basic soil mix commonly used for the new pot. Do not fertilize the repotted Carmona for a month, as it is crucial for the growing new roots to adjust to the soil and more fertilizer could burn the newly grown roots.
Wiring – Wiring is safe to do any time of the year, but remember to remove the wiring before it cuts into the bark, usually after 8 weeks.
Pruning – The Carmona can take pruning very well as long as it’s healthy, even hard pruning. There is no restriction for when to do it, so prune the tree at your leisure.
Advise to Bonsai Beginners
The above are just general guidelines to help get familiar with the Carmona. There are many varieties of Carmona, and although basic guidelines remain same for all, it is important to remember that research must be done in order to understand how to best nurture your particular type of Carmona.