shortest dormancy

i know i have been asking aalot about the dormancy thing. how long should i keep my ehlersia and giganta under dry summer dormcy? is 1 month ok?
and is my eherlsia readdy. it have about 50 leaves and is starting to form a cylinder shape upwards.


thanks
mike

P.gigantea does not need a dry dormancy. As for ehlersai, the plant will come out of dormancy naturally when the photoperiod/temps. increase. Usually adventitious roots will be produced from between the leaves of the rosette when the plant is ready to come out of dormancy. At that time, watering can be increased little by little.