2021 年霜冻影响中西部农场和花园的生长，对农作物、害虫和疾病造成影响。 2021 frost affects Central West farm and garden growth, impacting crops, pests, and diseases.

400 个字符的摘要：根据个人经历，讨论了弗罗斯特对农场和花园的影响。 400-character summary: Frost's impacts on farms and gardens are discussed, drawing from personal experiences. 当冰点以上的水蒸气遇到冰点以下的表面时就会形成霜。 Frost forms when water vapor above freezing meets a below-freezing surface. 它可以危害农作物，防治病虫害，但对一些植物也有好处。 It can harm crops, control pests and diseases, and some plants benefit. 传统的蛋糕在烘烤之前都要进行“糖霜”处理。 Traditional cakes were "iced" before baking. 中西部拉克兰土地保护 (Central West Lachlan Landcare) 网站提供了更多信息。 The Central West Lachlan Landcare website offers further information.