The International Red Cross has warned that Zimbabwe could be facing a very severe food crisis.

The charity says that more than 2.7 million people, a quarter of the country's population, are in "dire need" of food aid.

There are already more than two million people who need food aid in the country and that number is going to rise because the harvest has failed, the group says.

They are appealing for donors to contribute more than $20m in funding.

There is also concern about the possible impact of food shortage on the estimated one million children left orphaned after their parents died of Aids.

Al Jazeera's Owen Fay reports.