“玫瑰为何在冬天凋谢？”

玫瑰在冬季凋谢的现象确实令人困惑。实际上，这与玫瑰的生长习性和环境条件有关。

1. 生长习性：

• Rose plants have specific growing conditions that they thrive under.
• They require well-drained soil and full sun to grow healthily.

2. 冬季低温的影响：

• 低温会抑制植物的新陈代谢活动，导致叶子变黄脱落。
• 如果温度过低持续时间长，根部可能受到冻伤甚至死亡。

3. 光照不足：

• Roses need at least 6 hours of direct sunlight per day for optimal growth.
• Short days in winter can lead to less photosynthesis and slower plant development.

4. 营养需求：

• Roses benefit from regular fertilization throughout the year.
• During winter, their nutrient requirements increase due to reduced growth.

5. 防寒措施：

• Roses should be protected against extreme cold with frost protection measures like mulching or wrapping.
• This helps retain heat and prevent freezing damage.