Q.What Is The Cause Of My Overwintering Begonia Corms/tubers Turning To Dust.
Last season I lost over 50% of Begonia corms/tubers, this season all of them. They are like hard balls of soil/compost and when you squeeze them the just crumble, some if you break them in halve are brown in the centre although still firm. They are stored in a frost free area. Have over wintered in the same place and packed them away using same method and have encountered nothing like this in previous occasions. Any help/advice would be appreciated. Cheers Dave Hargreaves
Certified GKH Gardening Expert
They could have been diseased or not cured properly. In late summer cut back on water. When the leaves turn yellow, then dig them up. Store them in paper bags in boxes in an area between 40 and 50 degrees F.
https://www.gardeningknowhow.com/ornamental/flowers/begonia/tuberous-begonia-care.htm
