26
Cold Hardy Citrus / Re: PT-plusXValentine cross
« on: December 30, 2023, 10:51:17 AM »
As an acclimatation step I expose pots to outside conditions for two weeks during February and March. Usually average temperatures in this period change from 8 to 12°C.
In temperature controlled freezer the pots with seedlings are kept at 0°C overnight, -4.5°C for 3 hours and -8°C for four hours. Then the are left with power off overnight. In 6 hours the soil temperature of pots reaches 0°C.
In temperature controlled freezer the pots with seedlings are kept at 0°C overnight, -4.5°C for 3 hours and -8°C for four hours. Then the are left with power off overnight. In 6 hours the soil temperature of pots reaches 0°C.