
The exception to the rule is the Kumquat. If they are kept in a conservatory or greenhouse in the summer, they must have ample ventilation.Įxtreme care must be exercised in late spring, before plants have been moved outside, when the temperatures in conservatories and greenhouses can soar on sunny days, vents must be opened to prevent over-heating.

The more sun the better!Ĭitrus can stand 38 ° C (100 ° F) or more, but above 35 ° C (96 ° F) will cease to grow, therefore they usually fare much better outside for the duration of the summer. They should remain in the sun for the rest of the summer. Plants should be placed in a shady spot and gradually crept into full sun over the course of a week or so to prevent leaf scorch. Citrus plants are happy to stand outside after the spring frosts have ended (usually about the end of May).
