posted 4 years ago
I'm not aware of any method to trigger kiwi to flower again after they've already been damaged by frost. There are things you can do next year that will protect plants from frost and this will probably be the only solution. If the ground is mostly clear of weeds, grass, etc. under and close to your kiwi plants it will radiate more heat at night, preventing frost damage. Placing a few large rocks around the perimeter of your kiwi vines will also help, rocks tend to radiate lots of heat on a cold night and help prevent freezing.
If this is still a consistent problem every year, you may want to try planting kiwi plants in locations that will protect them from frost. If you remove the lower branches off a conifer, the space below it will be sheltered. The branches of the tree will reflect heat back down, and the space underneath it will be less prone to frost. A vine planted next to a cliff or steep mountain side will also get more radiation from the ground on cold nights.