关于“别忘记给花浇水”的英文表达，综合搜索结果整理如下：

核心表达

- Forget to water the flowers

这是直接对应的英文翻译，简洁明了地表达了忘记浇水的行为。

扩展表达

- Don't forget to water your flowers

添加助动词"don't"使语气更强烈，适用于提醒场景。 - Always remember to water the flowers

强调规律性，适合制定养护计划时使用。 - It's important not to forget watering the flowers

采用正式语气，适合书面提醒或说明。

相关建议

- 若需描述忘记浇水导致的后果，可用：

- The flowers began to wilt due to lack of water.

- 若强调主动补救，可用：

- I rushed to water the plants as soon as I remembered.

建议根据具体语境选择表达方式，日常交流推荐使用"Never forget to water your flowers"作为座右铭。