New year and another reason for good scouting!
You have probably heard about Xanthomonas leaf spot in begonia cuttings. Plantpeddler (with help from Margery Daughtrey so you know it is good) put out guidelines on recognizing and managing the disease. This is another of those diseases where identification and quick (and careful) removal from the greenhouse are important in reducing the losses. You can’t cure it once you have it in a plant but you CAN reduce new infections.
A greenhouse wouldn’t be a bad place to be today, so get out and get scouting!