The dry periods of the tropics and subtropics are to be equated with our winter. How do the plants living there survive this time? Their storage organs in the form of bulbs and bulbs contain sufficient reserve materials, to keep the plant viable. The Tau, which often forms strongly at night, is absorbed through the aerial roots, u.U. even right through the leaves; the subsistence level is thus secured.
The temperatures are lower than in the rainy season, so that with the combination of cool and dry the functions are largely inhibited, but are not completely prevented. The rest period shows the opposite picture. As a rule, it begins with increasing maturation of the annual shoots. Most tropical-subtropical orchids have oriented themselves to our climatic process and stop growing in late summer or early autumn. With full development of the pseudobulbs, in some species even earlier, reduce the humidity and limit watering or frequent spraying. However, this transition must not be sudden, but only gradually – spread over weeks – respectively. All plants are an exception, which bloom immediately or shortly after the formation of the annual shoot. With enough light and adequate ventilation, they should be kept consistently moist until they bloom and then until they bloom. Only then does the rest period begin. Is the flowering time in the winter months or in spring, so the plants rest after the end of the annual shoot and complete maturation until the buds become visible. From this point on, they will receive normal moisture until they bloom, then they rest again until the beginning of the new drive.